oracle asm剖析系列(6)–template directory

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本文链接地址: oracle asm剖析系列(6)–template directory

前面关于oracle asm 剖析系列已经进行了5篇，这将是第6篇。这篇的主要是内容是关于asm file 5，
也就是asm template，即asm 模板。asm中默认就存在众多模板，每种模板针对不同类似的文件。如下
来自oracle 10gR2和11gR2版本的查询结果：

---10.2
SQL> select * from V$ASM_TEMPLATE;
GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME
------------ ------------ ------ ------ - ------------------------------
1            0 UNPROT COARSE Y PARAMETERFILE
1            1 UNPROT COARSE Y DUMPSET
1            2 UNPROT FINE   Y CONTROLFILE
1            3 UNPROT COARSE Y ARCHIVELOG
1            4 UNPROT FINE   Y ONLINELOG
1            5 UNPROT COARSE Y DATAFILE
1            6 UNPROT COARSE Y TEMPFILE
1            7 UNPROT COARSE Y BACKUPSET
1            8 UNPROT COARSE Y AUTOBACKUP
1            9 UNPROT COARSE Y XTRANSPORT
1           10 UNPROT COARSE Y CHANGETRACKING
1           11 UNPROT FINE   Y FLASHBACK
1           12 UNPROT COARSE Y DATAGUARDCONFIG
13 rows selected.
你看到冗余的一列，显示的是unprot，即是不支持。
---11.2
SQL> select * from V$ASM_TEMPLATE order by 2;
GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME                           PRIM MIRR
------------ ------------ ------ ------ - ------------------------------ ---- ----
2            0 UNPROT COARSE Y PARAMETERFILE                  COLD COLD
2            1 UNPROT COARSE Y ASMPARAMETERFILE               COLD COLD
2            3 UNPROT COARSE Y DUMPSET                        COLD COLD
2            4 UNPROT FINE   Y CONTROLFILE                    COLD COLD
2            5 UNPROT COARSE Y FLASHFILE                      COLD COLD
2            6 UNPROT COARSE Y ARCHIVELOG                     COLD COLD
2            7 UNPROT COARSE Y ONLINELOG                      COLD COLD
2            8 UNPROT COARSE Y DATAFILE                       COLD COLD
2            9 UNPROT COARSE Y TEMPFILE                       COLD COLD
2           10 UNPROT COARSE Y BACKUPSET                      COLD COLD
2           11 UNPROT COARSE Y AUTOBACKUP                     COLD COLD
2           12 UNPROT COARSE Y XTRANSPORT                     COLD COLD
2           13 UNPROT COARSE Y CHANGETRACKING                 COLD COLD
2           14 UNPROT COARSE Y FLASHBACK                      COLD COLD
2           15 UNPROT COARSE Y DATAGUARDCONFIG                COLD COLD
2           16 UNPROT COARSE Y OCRFILE                        COLD COLD
1           60 UNPROT COARSE Y PARAMETERFILE                  COLD COLD
1           61 UNPROT COARSE Y ASMPARAMETERFILE               COLD COLD
1           63 UNPROT COARSE Y DUMPSET                        COLD COLD
1           64 UNPROT FINE   Y CONTROLFILE                    COLD COLD
1           65 UNPROT COARSE Y FLASHFILE                      COLD COLD
1           66 UNPROT COARSE Y ARCHIVELOG                     COLD COLD
1           67 UNPROT COARSE Y ONLINELOG                      COLD COLD
1           68 UNPROT COARSE Y DATAFILE                       COLD COLD
1           69 UNPROT COARSE Y TEMPFILE                       COLD COLD
1          170 UNPROT COARSE Y BACKUPSET                      COLD COLD
1          171 UNPROT COARSE Y AUTOBACKUP                     COLD COLD
1          172 UNPROT COARSE Y XTRANSPORT                     COLD COLD
1          173 UNPROT COARSE Y CHANGETRACKING                 COLD COLD
1          174 UNPROT COARSE Y FLASHBACK                      COLD COLD
1          175 UNPROT COARSE Y DATAGUARDCONFIG                COLD COLD
1          176 UNPROT COARSE Y OCRFILE                        COLD COLD
32 rows selected.

---10.2

SQL> select * from V$ASM_TEMPLATE;

GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME

------------ ------------ ------ ------ - ------------------------------

1 0 UNPROT COARSE Y PARAMETERFILE

1 1 UNPROT COARSE Y DUMPSET

1 2 UNPROT FINE Y CONTROLFILE

1 3 UNPROT COARSE Y ARCHIVELOG

1 4 UNPROT FINE Y ONLINELOG

1 5 UNPROT COARSE Y DATAFILE

1 6 UNPROT COARSE Y TEMPFILE

1 7 UNPROT COARSE Y BACKUPSET

1 8 UNPROT COARSE Y AUTOBACKUP

1 9 UNPROT COARSE Y XTRANSPORT

1 10 UNPROT COARSE Y CHANGETRACKING

1 11 UNPROT FINE Y FLASHBACK

1 12 UNPROT COARSE Y DATAGUARDCONFIG

13 rows selected.

你看到冗余的一列，显示的是unprot，即是不支持。

---11.2

SQL> select * from V$ASM_TEMPLATE order by 2;

GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME PRIM MIRR

------------ ------------ ------ ------ - ------------------------------ ---- ----

2 0 UNPROT COARSE Y PARAMETERFILE COLD COLD

2 1 UNPROT COARSE Y ASMPARAMETERFILE COLD COLD

2 3 UNPROT COARSE Y DUMPSET COLD COLD

2 4 UNPROT FINE Y CONTROLFILE COLD COLD

2 5 UNPROT COARSE Y FLASHFILE COLD COLD

2 6 UNPROT COARSE Y ARCHIVELOG COLD COLD

2 7 UNPROT COARSE Y ONLINELOG COLD COLD

2 8 UNPROT COARSE Y DATAFILE COLD COLD

2 9 UNPROT COARSE Y TEMPFILE COLD COLD

2 10 UNPROT COARSE Y BACKUPSET COLD COLD

2 11 UNPROT COARSE Y AUTOBACKUP COLD COLD

2 12 UNPROT COARSE Y XTRANSPORT COLD COLD

2 13 UNPROT COARSE Y CHANGETRACKING COLD COLD

2 14 UNPROT COARSE Y FLASHBACK COLD COLD

2 15 UNPROT COARSE Y DATAGUARDCONFIG COLD COLD

2 16 UNPROT COARSE Y OCRFILE COLD COLD

1 60 UNPROT COARSE Y PARAMETERFILE COLD COLD

1 61 UNPROT COARSE Y ASMPARAMETERFILE COLD COLD

1 63 UNPROT COARSE Y DUMPSET COLD COLD

1 64 UNPROT FINE Y CONTROLFILE COLD COLD

1 65 UNPROT COARSE Y FLASHFILE COLD COLD

1 66 UNPROT COARSE Y ARCHIVELOG COLD COLD

1 67 UNPROT COARSE Y ONLINELOG COLD COLD

1 68 UNPROT COARSE Y DATAFILE COLD COLD

1 69 UNPROT COARSE Y TEMPFILE COLD COLD

1 170 UNPROT COARSE Y BACKUPSET COLD COLD

1 171 UNPROT COARSE Y AUTOBACKUP COLD COLD

1 172 UNPROT COARSE Y XTRANSPORT COLD COLD

1 173 UNPROT COARSE Y CHANGETRACKING COLD COLD

1 174 UNPROT COARSE Y FLASHBACK COLD COLD

1 175 UNPROT COARSE Y DATAGUARDCONFIG COLD COLD

1 176 UNPROT COARSE Y OCRFILE COLD COLD

32 rows selected.

首先我们来看看关于template的相关操作，例如创建一个新的template 模板：

SQL> alter diskgroup data1 drop disk DATA1_0003;
Diskgroup altered.
SQL> alter diskgroup data1 drop disk DATA1_0002;
Diskgroup altered.
SQL> create diskgroup data2 normal REDUNDANCY disk '/dev/sdb','/dev/sde';
Diskgroup created.
SQL> SELECT
2      NVL(a.name, '[CANDIDATE]')                       disk_group_name
3    , b.path                                           disk_file_path
4    , b.name                                           disk_file_name
5    , b.failgroup                                      disk_file_fail_group
6    , b.total_mb                                       total_mb
7    , (b.total_mb - b.free_mb)                         used_mb
8    , ROUND((1- (b.free_mb / b.total_mb))*100, 2)      pct_used
9  FROM
10      v$asm_diskgroup a RIGHT OUTER JOIN v$asm_disk b USING (group_number)
11  ORDER BY
12      a.name
13  /
Disk Group Name      Path              File Name            Fail Group           File Size (MB) Used Size (MB) Pct. Used
-------------------- ----------------- -------------------- -------------------- -------------- -------------- ---------
DATA1                /dev/sdd          DATA1_0000           DATA1_0000                    1,024            519     50.68
/dev/sdc          DATA1_0001           DATA1_0001                    1,024            519     50.68
********************                                                             -------------- --------------
2,048          1,038
DATA2                /dev/sdb          DATA2_0000           DATA2_0000                    1,024             51      4.98
/dev/sde          DATA2_0001           DATA2_0001                    1,024             51      4.98
********************                                                             -------------- --------------
2,048            102
-------------- --------------
Grand Total:                                                                              4,096          1,140
SQL> SELECT
2      name                                     group_name
3    , sector_size                              sector_size
4    , block_size                               block_size
5    , allocation_unit_size                     allocation_unit_size
6    , state                                    state
7    , type                                     type
8    , total_mb                                 total_mb
9    , (total_mb - free_mb)                     used_mb
10    , ROUND((1- (free_mb / total_mb))*100, 2)  pct_used
11  FROM
12      v$asm_diskgroup
13  ORDER BY
14      name
15  /
Disk Group            Sector   Block   Allocation
Name                    Size    Size    Unit Size State       Type   File Size (MB) Used Size (MB) Pct. Used
-------------------- ------- ------- ------------ ----------- ------ -------------- -------------- ---------
DATA1                    512   4,096    1,048,576 MOUNTED     EXTERN          2,048          1,038     50.68
DATA2                    512   4,096    1,048,576 MOUNTED     NORMAL          2,048            102      4.98
-------------- --------------
Grand Total:
4,096          1,140
+++++++++++++创建一个test表空间到data2 diskgroup上：
---asm instance
SQL> show parameter type
NAME                                 Type   VALUE
------------------------------------ ------ ------------------------------
instance_type                        string asm
plsql_code_type                      string INTERPRETED
SQL> alter diskgroup data2 add template test_template attributes (coarse);
Diskgroup altered.
SQL> 
SQL> select * from v$asm_template;
GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME
------------ ------------ ------ ------ - ------------------------------
1            0 UNPROT COARSE Y PARAMETERFILE
1            1 UNPROT COARSE Y DUMPSET
1            2 UNPROT FINE   Y CONTROLFILE
1            3 UNPROT COARSE Y ARCHIVELOG
1            4 UNPROT FINE   Y ONLINELOG
1            5 UNPROT COARSE Y DATAFILE
1            6 UNPROT COARSE Y TEMPFILE
1            7 UNPROT COARSE Y BACKUPSET
1            8 UNPROT COARSE Y AUTOBACKUP
1            9 UNPROT COARSE Y XTRANSPORT
1           10 UNPROT COARSE Y CHANGETRACKING
1           11 UNPROT FINE   Y FLASHBACK
1           12 UNPROT COARSE Y DATAGUARDCONFIG
2            0 MIRROR COARSE Y PARAMETERFILE
2            1 MIRROR COARSE Y DUMPSET
2            2 HIGH   FINE   Y CONTROLFILE
2            3 MIRROR COARSE Y ARCHIVELOG
2            4 MIRROR FINE   Y ONLINELOG
2            5 MIRROR COARSE Y DATAFILE
2            6 MIRROR COARSE Y TEMPFILE
2            7 MIRROR COARSE Y BACKUPSET
2            8 MIRROR COARSE Y AUTOBACKUP
2            9 MIRROR COARSE Y XTRANSPORT
2           10 MIRROR COARSE Y CHANGETRACKING
2           11 MIRROR FINE   Y FLASHBACK
2           12 MIRROR COARSE Y DATAGUARDCONFIG
2           13 MIRROR COARSE N TEST_TEMPLATE
27 rows selected.
----database instance
SQL> show parameter type
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
instance_type                        string      RDBMS
plsql_code_type                      string      INTERPRETED
SQL> create tablespace test datafile '+data2(test_template)' size 5m;
Tablespace created.
SQL>

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SQL> alter diskgroup data1 drop disk DATA1_0003;

Diskgroup altered.

SQL> alter diskgroup data1 drop disk DATA1_0002;

Diskgroup altered.

SQL> create diskgroup data2 normal REDUNDANCY disk '/dev/sdb','/dev/sde';

Diskgroup created.

SQL> SELECT

2 NVL(a.name, '[CANDIDATE]') disk_group_name

3 , b.path disk_file_path

4 , b.name disk_file_name

5 , b.failgroup disk_file_fail_group

6 , b.total_mb total_mb

7 , (b.total_mb - b.free_mb) used_mb

8 , ROUND((1- (b.free_mb / b.total_mb))*100, 2) pct_used

9 FROM

10 v$asm_diskgroup a RIGHT OUTER JOIN v$asm_disk b USING (group_number)

11 ORDER BY

12 a.name

13 /

Disk Group Name Path File Name Fail Group File Size (MB) Used Size (MB) Pct. Used

-------------------- ----------------- -------------------- -------------------- -------------- -------------- ---------

DATA1 /dev/sdd DATA1_0000 DATA1_0000 1,024 519 50.68

/dev/sdc DATA1_0001 DATA1_0001 1,024 519 50.68

******************** -------------- --------------

2,048 1,038

DATA2 /dev/sdb DATA2_0000 DATA2_0000 1,024 51 4.98

/dev/sde DATA2_0001 DATA2_0001 1,024 51 4.98

******************** -------------- --------------

2,048 102

-------------- --------------

Grand Total: 4,096 1,140

SQL> SELECT

2 name group_name

3 , sector_size sector_size

4 , block_size block_size

5 , allocation_unit_size allocation_unit_size

6 , state state

7 , type type

8 , total_mb total_mb

9 , (total_mb - free_mb) used_mb

10 , ROUND((1- (free_mb / total_mb))*100, 2) pct_used

11 FROM

12 v$asm_diskgroup

13 ORDER BY

14 name

15 /

Disk Group Sector Block Allocation

Name Size Size Unit Size State Type File Size (MB) Used Size (MB) Pct. Used

-------------------- ------- ------- ------------ ----------- ------ -------------- -------------- ---------

DATA1 512 4,096 1,048,576 MOUNTED EXTERN 2,048 1,038 50.68

DATA2 512 4,096 1,048,576 MOUNTED NORMAL 2,048 102 4.98

-------------- --------------

Grand Total:

4,096 1,140

+++++++++++++创建一个test表空间到data2 diskgroup上：

---asm instance

SQL> show parameter type

NAME Type VALUE

------------------------------------ ------ ------------------------------

instance_type string asm

plsql_code_type string INTERPRETED

SQL> alter diskgroup data2 add template test_template attributes (coarse);

Diskgroup altered.

SQL>

SQL> select * from v$asm_template;

GROUP_NUMBER ENTRY_NUMBER REDUND STRIPE S NAME

------------ ------------ ------ ------ - ------------------------------

1 0 UNPROT COARSE Y PARAMETERFILE

1 1 UNPROT COARSE Y DUMPSET

1 2 UNPROT FINE Y CONTROLFILE

1 3 UNPROT COARSE Y ARCHIVELOG

1 4 UNPROT FINE Y ONLINELOG

1 5 UNPROT COARSE Y DATAFILE

1 6 UNPROT COARSE Y TEMPFILE

1 7 UNPROT COARSE Y BACKUPSET

1 8 UNPROT COARSE Y AUTOBACKUP

1 9 UNPROT COARSE Y XTRANSPORT

1 10 UNPROT COARSE Y CHANGETRACKING

1 11 UNPROT FINE Y FLASHBACK

1 12 UNPROT COARSE Y DATAGUARDCONFIG

2 0 MIRROR COARSE Y PARAMETERFILE

2 1 MIRROR COARSE Y DUMPSET

2 2 HIGH FINE Y CONTROLFILE

2 3 MIRROR COARSE Y ARCHIVELOG

2 4 MIRROR FINE Y ONLINELOG

2 5 MIRROR COARSE Y DATAFILE

2 6 MIRROR COARSE Y TEMPFILE

2 7 MIRROR COARSE Y BACKUPSET

2 8 MIRROR COARSE Y AUTOBACKUP

2 9 MIRROR COARSE Y XTRANSPORT

2 10 MIRROR COARSE Y CHANGETRACKING

2 11 MIRROR FINE Y FLASHBACK

2 12 MIRROR COARSE Y DATAGUARDCONFIG

2 13 MIRROR COARSE N TEST_TEMPLATE

27 rows selected.

----database instance

SQL> show parameter type

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

instance_type string RDBMS

plsql_code_type string INTERPRETED

SQL> create tablespace test datafile '+data2(test_template)' size 5m;

Tablespace created.

SQL>

回到主题上来，我这里仍然以10gR2 版本为例，通过如下查询我们知道asm template directory信息在file 5中：

SQL> select number_kffxp file#, disk_kffxp disk#, count(disk_kffxp) extents
2  from x$kffxp
3  where group_kffxp=1
4        and disk_kffxp <> 65534
5  group by number_kffxp, disk_kffxp;
FILE#      DISK#    EXTENTS
---------- ---------- ----------
1          0          1
1          1          1
2          1          1
3          0         21
3          1         21
4          0          1
4          1          1
5          0          1   ---这就是template directory
6          0          1
256          0        240
..........

SQL> select number_kffxp file#, disk_kffxp disk#, count(disk_kffxp) extents

2 from x$kffxp

3 where group_kffxp=1

4 and disk_kffxp <> 65534

5 group by number_kffxp, disk_kffxp;

FILE# DISK# EXTENTS

---------- ---------- ----------

1 0 1

1 1 1

2 1 1

3 0 21

3 1 21

4 0 1

4 1 1

5 0 1 ---这就是template directory

6 0 1

256 0 240

..........

既然我们知道template是file 5，那么其元数据也就在第file directory 的第5个block，如下:

[oracle@10gasm ~]$ kfed read /dev/sdb aun=2 blkn=5 |more
kfbh.endian:                          1 ; 0x000: 0x01
kfbh.hard:                          130 ; 0x001: 0x82
kfbh.type:                            4 ; 0x002: KFBTYP_FILEDIR
kfbh.datfmt:                          1 ; 0x003: 0x01
kfbh.block.blk:                       5 ; 0x004: T=0 NUMB=0x5
kfbh.block.obj:                       1 ; 0x008: TYPE=0x0 NUMB=0x1
kfbh.check:                  3972293368 ; 0x00c: 0xecc462f8
kfbh.fcn.base:                        0 ; 0x010: 0x00000000
kfbh.fcn.wrap:                        0 ; 0x014: 0x00000000
kfbh.spare1:                          0 ; 0x018: 0x00000000
kfbh.spare2:                          0 ; 0x01c: 0x00000000
kfffdb.node.incarn:                   1 ; 0x000: A=1 NUMM=0x0
kfffdb.node.frlist.number:   4294967295 ; 0x004: 0xffffffff
kfffdb.node.frlist.incarn:            0 ; 0x008: A=0 NUMM=0x0
kfffdb.hibytes:                       0 ; 0x00c: 0x00000000
kfffdb.lobytes:                 1048576 ; 0x010: 0x00100000
kfffdb.xtntcnt:                       3 ; 0x014: 0x00000003
kfffdb.xtnteof:                       3 ; 0x018: 0x00000003
kfffdb.blkSize:                    4096 ; 0x01c: 0x00001000
kfffdb.flags:                         1 ; 0x020: O=1 S=0 S=0 D=0 C=0 I=0 R=0 A=0
kfffdb.fileType:                     15 ; 0x021: 0x0f
kfffdb.dXrs:                         19 ; 0x022: SCHE=0x1 NUMB=0x3
kfffdb.iXrs:                         19 ; 0x023: SCHE=0x1 NUMB=0x3
kfffdb.dXsiz[0]:             4294967295 ; 0x024: 0xffffffff
kfffdb.dXsiz[1]:                      0 ; 0x028: 0x00000000
kfffdb.dXsiz[2]:                      0 ; 0x02c: 0x00000000
kfffdb.iXsiz[0]:             4294967295 ; 0x030: 0xffffffff
kfffdb.iXsiz[1]:                      0 ; 0x034: 0x00000000
kfffdb.iXsiz[2]:                      0 ; 0x038: 0x00000000
kfffdb.xtntblk:                       3 ; 0x03c: 0x0003
kfffdb.break:                        60 ; 0x03e: 0x003c
kfffdb.priZn:                         0 ; 0x040: 0x00
kfffdb.secZn:                         0 ; 0x041: 0x00
kfffdb.ub2spare:                      0 ; 0x042: 0x0000
kfffdb.alias[0]:             4294967295 ; 0x044: 0xffffffff
kfffdb.alias[1]:             4294967295 ; 0x048: 0xffffffff
kfffdb.strpwdth:                      0 ; 0x04c: 0x00
kfffdb.strpsz:                        0 ; 0x04d: 0x00
kfffdb.usmsz:                         0 ; 0x04e: 0x0000
kfffdb.crets.hi:               32982470 ; 0x050: HOUR=0x6 DAYS=0xe MNTH=0x1 YEAR=0x7dd
kfffdb.crets.lo:              330584064 ; 0x054: USEC=0x0 MSEC=0x114 SECS=0x3b MINS=0x4
kfffdb.modts.hi:               32982470 ; 0x058: HOUR=0x6 DAYS=0xe MNTH=0x1 YEAR=0x7dd
kfffdb.modts.lo:              330584064 ; 0x05c: USEC=0x0 MSEC=0x114 SECS=0x3b MINS=0x4
kfffdb.spare[0]:                      0 ; 0x060: 0x00000000
........
kfffdb.spare[14]:                     0 ; 0x098: 0x00000000
kfffdb.spare[15]:                     0 ; 0x09c: 0x00000000
kfffdb.usm:                             ; 0x0a0: length=0
kfffde[0].xptr.au:                   49 ; 0x4a0: 0x00000031
kfffde[0].xptr.disk:                  0 ; 0x4a4: 0x0000
kfffde[0].xptr.flags:                 0 ; 0x4a6: L=0 E=0 D=0 C=0 S=0
kfffde[0].xptr.chk:                  27 ; 0x4a7: 0x1b
kfffde[1].xptr.au:                   49 ; 0x4a8: 0x00000031
kfffde[1].xptr.disk:                  1 ; 0x4ac: 0x0001
kfffde[1].xptr.flags:                 0 ; 0x4ae: L=0 E=0 D=0 C=0 S=0
kfffde[1].xptr.chk:                  26 ; 0x4af: 0x1a
kfffde[2].xptr.au:           4294967294 ; 0x4b0: 0xfffffffe
........

[oracle@10gasm ~]$ kfed read /dev/sdb aun=2 blkn=5 |more

kfbh.endian: 1 ; 0x000: 0x01

kfbh.hard: 130 ; 0x001: 0x82

kfbh.type: 4 ; 0x002: KFBTYP_FILEDIR

kfbh.datfmt: 1 ; 0x003: 0x01

kfbh.block.blk: 5 ; 0x004: T=0 NUMB=0x5

kfbh.block.obj: 1 ; 0x008: TYPE=0x0 NUMB=0x1

kfbh.check: 3972293368 ; 0x00c: 0xecc462f8

kfbh.fcn.base: 0 ; 0x010: 0x00000000

kfbh.fcn.wrap: 0 ; 0x014: 0x00000000

kfbh.spare1: 0 ; 0x018: 0x00000000

kfbh.spare2: 0 ; 0x01c: 0x00000000

kfffdb.node.incarn: 1 ; 0x000: A=1 NUMM=0x0

kfffdb.node.frlist.number: 4294967295 ; 0x004: 0xffffffff

kfffdb.node.frlist.incarn: 0 ; 0x008: A=0 NUMM=0x0

kfffdb.hibytes: 0 ; 0x00c: 0x00000000

kfffdb.lobytes: 1048576 ; 0x010: 0x00100000

kfffdb.xtntcnt: 3 ; 0x014: 0x00000003

kfffdb.xtnteof: 3 ; 0x018: 0x00000003

kfffdb.blkSize: 4096 ; 0x01c: 0x00001000

kfffdb.flags: 1 ; 0x020: O=1 S=0 S=0 D=0 C=0 I=0 R=0 A=0

kfffdb.fileType: 15 ; 0x021: 0x0f

kfffdb.dXrs: 19 ; 0x022: SCHE=0x1 NUMB=0x3

kfffdb.iXrs: 19 ; 0x023: SCHE=0x1 NUMB=0x3

kfffdb.dXsiz[0]: 4294967295 ; 0x024: 0xffffffff

kfffdb.dXsiz[1]: 0 ; 0x028: 0x00000000

kfffdb.dXsiz[2]: 0 ; 0x02c: 0x00000000

kfffdb.iXsiz[0]: 4294967295 ; 0x030: 0xffffffff

kfffdb.iXsiz[1]: 0 ; 0x034: 0x00000000

kfffdb.iXsiz[2]: 0 ; 0x038: 0x00000000

kfffdb.xtntblk: 3 ; 0x03c: 0x0003

kfffdb.break: 60 ; 0x03e: 0x003c

kfffdb.priZn: 0 ; 0x040: 0x00

kfffdb.secZn: 0 ; 0x041: 0x00

kfffdb.ub2spare: 0 ; 0x042: 0x0000

kfffdb.alias[0]: 4294967295 ; 0x044: 0xffffffff

kfffdb.alias[1]: 4294967295 ; 0x048: 0xffffffff

kfffdb.strpwdth: 0 ; 0x04c: 0x00

kfffdb.strpsz: 0 ; 0x04d: 0x00

kfffdb.usmsz: 0 ; 0x04e: 0x0000

kfffdb.crets.hi: 32982470 ; 0x050: HOUR=0x6 DAYS=0xe MNTH=0x1 YEAR=0x7dd

kfffdb.crets.lo: 330584064 ; 0x054: USEC=0x0 MSEC=0x114 SECS=0x3b MINS=0x4

kfffdb.modts.hi: 32982470 ; 0x058: HOUR=0x6 DAYS=0xe MNTH=0x1 YEAR=0x7dd

kfffdb.modts.lo: 330584064 ; 0x05c: USEC=0x0 MSEC=0x114 SECS=0x3b MINS=0x4

kfffdb.spare[0]: 0 ; 0x060: 0x00000000

........

kfffdb.spare[14]: 0 ; 0x098: 0x00000000

kfffdb.spare[15]: 0 ; 0x09c: 0x00000000

kfffdb.usm: ; 0x0a0: length=0

kfffde[0].xptr.au: 49 ; 0x4a0: 0x00000031

kfffde[0].xptr.disk: 0 ; 0x4a4: 0x0000

kfffde[0].xptr.flags: 0 ; 0x4a6: L=0 E=0 D=0 C=0 S=0

kfffde[0].xptr.chk: 27 ; 0x4a7: 0x1b

kfffde[1].xptr.au: 49 ; 0x4a8: 0x00000031

kfffde[1].xptr.disk: 1 ; 0x4ac: 0x0001

kfffde[1].xptr.flags: 0 ; 0x4ae: L=0 E=0 D=0 C=0 S=0

kfffde[1].xptr.chk: 26 ; 0x4af: 0x1a

kfffde[2].xptr.au: 4294967294 ; 0x4b0: 0xfffffffe

........

继续读取AU 49,得到如下结果：

[oracle@10gasm ~]$ kfed read /dev/sdb aun=49 blkn=0 |more
kfbh.endian:                          1 ; 0x000: 0x01
kfbh.hard:                          130 ; 0x001: 0x82
kfbh.type:                           10 ; 0x002: KFBTYP_TMPLTDIR
kfbh.datfmt:                          1 ; 0x003: 0x01
kfbh.block.blk:                       0 ; 0x004: T=0 NUMB=0x0
kfbh.block.obj:                       5 ; 0x008: TYPE=0x0 NUMB=0x5
kfbh.check:                  1227264929 ; 0x00c: 0x492693a1
kfbh.fcn.base:                      580 ; 0x010: 0x00000244
kfbh.fcn.wrap:                        0 ; 0x014: 0x00000000
kfbh.spare1:                          0 ; 0x018: 0x00000000
kfbh.spare2:                          0 ; 0x01c: 0x00000000
kffdnd.bnode.incarn:                  1 ; 0x000: A=1 NUMM=0x0
kffdnd.bnode.frlist.number:  4294967295 ; 0x004: 0xffffffff
kffdnd.bnode.frlist.incarn:           0 ; 0x008: A=0 NUMM=0x0
kffdnd.overfl.number:        4294967295 ; 0x00c: 0xffffffff
kffdnd.overfl.incarn:                 0 ; 0x010: A=0 NUMM=0x0
kffdnd.parent.number:                 0 ; 0x014: 0x00000000
kffdnd.parent.incarn:                 1 ; 0x018: A=1 NUMM=0x0
kffdnd.fstblk.number:                 0 ; 0x01c: 0x00000000
kffdnd.fstblk.incarn:                 1 ; 0x020: A=1 NUMM=0x0
kftmde[0].entry.incarn:               1 ; 0x024: A=1 NUMM=0x0
kftmde[0].entry.hash:            616561 ; 0x028: 0x00096871
kftmde[0].entry.refer.number:4294967295 ; 0x02c: 0xffffffff
kftmde[0].entry.refer.incarn:         0 ; 0x030: A=0 NUMM=0x0
kftmde[0].templ.name:     PARAMETERFILE ; 0x034: length=13
kftmde[0].templ.flags:                4 ; 0x054: S=0 S=0 S=1
kftmde[0].templ.redun:               18 ; 0x058: SCHE=0x1 NUMB=0x2
kftmde[0].templ.strpwdth:             8 ; 0x059: 0x08
kftmde[0].templ.strpsz:              17 ; 0x05a: 0x11
kftmde[0].templ.priZn:                0 ; 0x05b: 0x00
kftmde[0].templ.secZn:                0 ; 0x05c: 0x00
kftmde[0].templ.ub1spare:             0 ; 0x05d: 0x00
kftmde[0].templ.ub2spare:             0 ; 0x05e: 0x0000
kftmde[0].templ.dXsiz[0]:    4294967295 ; 0x060: 0xffffffff
kftmde[0].templ.dXsiz[1]:             0 ; 0x064: 0x00000000
kftmde[0].templ.dXsiz[2]:             0 ; 0x068: 0x00000000
kftmde[0].templ.iXsiz[0]:    4294967295 ; 0x06c: 0xffffffff
kftmde[0].templ.iXsiz[1]:             0 ; 0x070: 0x00000000
kftmde[0].templ.iXsiz[2]:             0 ; 0x074: 0x00000000
kftmde[0].templ.entry:                0 ; 0x078: 0x00000000
kftmde[0].templ.idx:                  0 ; 0x07c: 0x00000000
kftmde[0].templ.spare[0]:             0 ; 0x080: 0x00000000
........
kftmde[0].templ.spare[10]:            0 ; 0x0a8: 0x00000000
kftmde[1].entry.incarn:               1 ; 0x0ac: A=1 NUMM=0x0
kftmde[1].entry.hash:              9498 ; 0x0b0: 0x0000251a
kftmde[1].entry.refer.number:4294967295 ; 0x0b4: 0xffffffff
kftmde[1].entry.refer.incarn:         0 ; 0x0b8: A=0 NUMM=0x0
kftmde[1].templ.name:           DUMPSET ; 0x0bc: length=7
kftmde[1].templ.flags:                4 ; 0x0dc: S=0 S=0 S=1
kftmde[1].templ.redun:               18 ; 0x0e0: SCHE=0x1 NUMB=0x2
kftmde[1].templ.strpwdth:             8 ; 0x0e1: 0x08
kftmde[1].templ.strpsz:              17 ; 0x0e2: 0x11
kftmde[1].templ.priZn:                0 ; 0x0e3: 0x00
kftmde[1].templ.secZn:                0 ; 0x0e4: 0x00
kftmde[1].templ.ub1spare:             0 ; 0x0e5: 0x00
kftmde[1].templ.ub2spare:             0 ; 0x0e6: 0x0000
kftmde[1].templ.dXsiz[0]:    4294967295 ; 0x0e8: 0xffffffff
kftmde[1].templ.dXsiz[1]:             0 ; 0x0ec: 0x00000000
kftmde[1].templ.dXsiz[2]:             0 ; 0x0f0: 0x00000000
kftmde[1].templ.iXsiz[0]:    4294967295 ; 0x0f4: 0xffffffff
kftmde[1].templ.iXsiz[1]:             0 ; 0x0f8: 0x00000000
kftmde[1].templ.iXsiz[2]:             0 ; 0x0fc: 0x00000000
kftmde[1].templ.entry:                0 ; 0x100: 0x00000000
kftmde[1].templ.idx:                  0 ; 0x104: 0x00000000
kftmde[1].templ.spare[0]:             0 ; 0x108: 0x00000000
........
kftmde[1].templ.spare[10]:            0 ; 0x130: 0x00000000
kftmde[2].entry.incarn:               1 ; 0x134: A=1 NUMM=0x0
kftmde[2].entry.hash:            149841 ; 0x138: 0x00024951
kftmde[2].entry.refer.number:4294967295 ; 0x13c: 0xffffffff
kftmde[2].entry.refer.incarn:         0 ; 0x140: A=0 NUMM=0x0
kftmde[2].templ.name:       CONTROLFILE ; 0x144: length=11
kftmde[2].templ.flags:                5 ; 0x164: S=1 S=0 S=1
kftmde[2].templ.redun:               19 ; 0x168: SCHE=0x1 NUMB=0x3
kftmde[2].templ.strpwdth:             8 ; 0x169: 0x08
kftmde[2].templ.strpsz:              17 ; 0x16a: 0x11
kftmde[2].templ.priZn:                0 ; 0x16b: 0x00
kftmde[2].templ.secZn:                0 ; 0x16c: 0x00
kftmde[2].templ.ub1spare:             0 ; 0x16d: 0x00
kftmde[2].templ.ub2spare:             0 ; 0x16e: 0x0000
kftmde[2].templ.dXsiz[0]:    4294967295 ; 0x170: 0xffffffff
kftmde[2].templ.dXsiz[1]:             0 ; 0x174: 0x00000000
kftmde[2].templ.dXsiz[2]:             0 ; 0x178: 0x00000000
kftmde[2].templ.iXsiz[0]:    4294967295 ; 0x17c: 0xffffffff
kftmde[2].templ.iXsiz[1]:             0 ; 0x180: 0x00000000
kftmde[2].templ.iXsiz[2]:             0 ; 0x184: 0x00000000
kftmde[2].templ.entry:                0 ; 0x188: 0x00000000
kftmde[2].templ.idx:                  0 ; 0x18c: 0x00000000
kftmde[2].templ.spare[0]:             0 ; 0x190: 0x00000000
...........
kftmde[2].templ.spare[10]:            0 ; 0x1b8: 0x00000000
kftmde[3].entry.incarn:               1 ; 0x1bc: A=1 NUMM=0x0
kftmde[3].entry.hash:             72253 ; 0x1c0: 0x00011a3d
kftmde[3].entry.refer.number:4294967295 ; 0x1c4: 0xffffffff
kftmde[3].entry.refer.incarn:         0 ; 0x1c8: A=0 NUMM=0x0
kftmde[3].templ.name:        ARCHIVELOG ; 0x1cc: length=10
kftmde[3].templ.flags:                4 ; 0x1ec: S=0 S=0 S=1
kftmde[3].templ.redun:               18 ; 0x1f0: SCHE=0x1 NUMB=0x2
kftmde[3].templ.strpwdth:             8 ; 0x1f1: 0x08
kftmde[3].templ.strpsz:              17 ; 0x1f2: 0x11
kftmde[3].templ.priZn:                0 ; 0x1f3: 0x00
kftmde[3].templ.secZn:                0 ; 0x1f4: 0x00
kftmde[3].templ.ub1spare:             0 ; 0x1f5: 0x00
kftmde[3].templ.ub2spare:             0 ; 0x1f6: 0x0000
kftmde[3].templ.dXsiz[0]:    4294967295 ; 0x1f8: 0xffffffff
kftmde[3].templ.dXsiz[1]:             0 ; 0x1fc: 0x00000000
kftmde[3].templ.dXsiz[2]:             0 ; 0x200: 0x00000000
kftmde[3].templ.iXsiz[0]:    4294967295 ; 0x204: 0xffffffff
kftmde[3].templ.iXsiz[1]:             0 ; 0x208: 0x00000000
kftmde[3].templ.iXsiz[2]:             0 ; 0x20c: 0x00000000
kftmde[3].templ.entry:                0 ; 0x210: 0x00000000
kftmde[3].templ.idx:                  0 ; 0x214: 0x00000000
kftmde[3].templ.spare[0]:             0 ; 0x218: 0x00000000
.........
kftmde[3].templ.spare[10]:            0 ; 0x240: 0x00000000
.........
.........
kftmde[13].entry.incarn:              1 ; 0x70c: A=1 NUMM=0x0
kftmde[13].entry.hash:           657713 ; 0x710: 0x000a0931
kftmde[13].entry.refer.number:4294967295 ; 0x714: 0xffffffff
kftmde[13].entry.refer.incarn:        0 ; 0x718: A=0 NUMM=0x0
kftmde[13].templ.name:    TEST_TEMPLATE ; 0x71c: length=13
kftmde[13].templ.flags:               0 ; 0x73c: S=0 S=0 S=0
kftmde[13].templ.redun:              18 ; 0x740: SCHE=0x1 NUMB=0x2
kftmde[13].templ.strpwdth:            8 ; 0x741: 0x08
kftmde[13].templ.strpsz:             17 ; 0x742: 0x11
kftmde[13].templ.priZn:               0 ; 0x743: 0x00
kftmde[13].templ.secZn:               0 ; 0x744: 0x00
kftmde[13].templ.ub1spare:            0 ; 0x745: 0x00
kftmde[13].templ.ub2spare:            0 ; 0x746: 0x0000
kftmde[13].templ.dXsiz[0]:   4294967295 ; 0x748: 0xffffffff
kftmde[13].templ.dXsiz[1]:            0 ; 0x74c: 0x00000000
kftmde[13].templ.dXsiz[2]:            0 ; 0x750: 0x00000000
kftmde[13].templ.iXsiz[0]:   4294967295 ; 0x754: 0xffffffff
kftmde[13].templ.iXsiz[1]:            0 ; 0x758: 0x00000000
kftmde[13].templ.iXsiz[2]:            0 ; 0x75c: 0x00000000
kftmde[13].templ.entry:               0 ; 0x760: 0x00000000
kftmde[13].templ.idx:                 0 ; 0x764: 0x00000000
kftmde[13].templ.spare[0]:            0 ; 0x768: 0x00000000
kftmde[13].templ.spare[1]:            0 ; 0x76c: 0x00000000
.........

100

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[oracle@10gasm ~]$ kfed read /dev/sdb aun=49 blkn=0 |more

kfbh.endian: 1 ; 0x000: 0x01

kfbh.hard: 130 ; 0x001: 0x82

kfbh.type: 10 ; 0x002: KFBTYP_TMPLTDIR

kfbh.datfmt: 1 ; 0x003: 0x01

kfbh.block.blk: 0 ; 0x004: T=0 NUMB=0x0

kfbh.block.obj: 5 ; 0x008: TYPE=0x0 NUMB=0x5

kfbh.check: 1227264929 ; 0x00c: 0x492693a1

kfbh.fcn.base: 580 ; 0x010: 0x00000244

kfbh.fcn.wrap: 0 ; 0x014: 0x00000000

kfbh.spare1: 0 ; 0x018: 0x00000000

kfbh.spare2: 0 ; 0x01c: 0x00000000

kffdnd.bnode.incarn: 1 ; 0x000: A=1 NUMM=0x0

kffdnd.bnode.frlist.number: 4294967295 ; 0x004: 0xffffffff

kffdnd.bnode.frlist.incarn: 0 ; 0x008: A=0 NUMM=0x0

kffdnd.overfl.number: 4294967295 ; 0x00c: 0xffffffff

kffdnd.overfl.incarn: 0 ; 0x010: A=0 NUMM=0x0

kffdnd.parent.number: 0 ; 0x014: 0x00000000

kffdnd.parent.incarn: 1 ; 0x018: A=1 NUMM=0x0

kffdnd.fstblk.number: 0 ; 0x01c: 0x00000000

kffdnd.fstblk.incarn: 1 ; 0x020: A=1 NUMM=0x0

kftmde[0].entry.incarn: 1 ; 0x024: A=1 NUMM=0x0

kftmde[0].entry.hash: 616561 ; 0x028: 0x00096871

kftmde[0].entry.refer.number:4294967295 ; 0x02c: 0xffffffff

kftmde[0].entry.refer.incarn: 0 ; 0x030: A=0 NUMM=0x0

kftmde[0].templ.name: PARAMETERFILE ; 0x034: length=13

kftmde[0].templ.flags: 4 ; 0x054: S=0 S=0 S=1

kftmde[0].templ.redun: 18 ; 0x058: SCHE=0x1 NUMB=0x2

kftmde[0].templ.strpwdth: 8 ; 0x059: 0x08

kftmde[0].templ.strpsz: 17 ; 0x05a: 0x11

kftmde[0].templ.priZn: 0 ; 0x05b: 0x00

kftmde[0].templ.secZn: 0 ; 0x05c: 0x00

kftmde[0].templ.ub1spare: 0 ; 0x05d: 0x00

kftmde[0].templ.ub2spare: 0 ; 0x05e: 0x0000

kftmde[0].templ.dXsiz[0]: 4294967295 ; 0x060: 0xffffffff

kftmde[0].templ.dXsiz[1]: 0 ; 0x064: 0x00000000

kftmde[0].templ.dXsiz[2]: 0 ; 0x068: 0x00000000

kftmde[0].templ.iXsiz[0]: 4294967295 ; 0x06c: 0xffffffff

kftmde[0].templ.iXsiz[1]: 0 ; 0x070: 0x00000000

kftmde[0].templ.iXsiz[2]: 0 ; 0x074: 0x00000000

kftmde[0].templ.entry: 0 ; 0x078: 0x00000000

kftmde[0].templ.idx: 0 ; 0x07c: 0x00000000

kftmde[0].templ.spare[0]: 0 ; 0x080: 0x00000000

........

kftmde[0].templ.spare[10]: 0 ; 0x0a8: 0x00000000

kftmde[1].entry.incarn: 1 ; 0x0ac: A=1 NUMM=0x0

kftmde[1].entry.hash: 9498 ; 0x0b0: 0x0000251a

kftmde[1].entry.refer.number:4294967295 ; 0x0b4: 0xffffffff

kftmde[1].entry.refer.incarn: 0 ; 0x0b8: A=0 NUMM=0x0

kftmde[1].templ.name: DUMPSET ; 0x0bc: length=7

kftmde[1].templ.flags: 4 ; 0x0dc: S=0 S=0 S=1

kftmde[1].templ.redun: 18 ; 0x0e0: SCHE=0x1 NUMB=0x2

kftmde[1].templ.strpwdth: 8 ; 0x0e1: 0x08

kftmde[1].templ.strpsz: 17 ; 0x0e2: 0x11

kftmde[1].templ.priZn: 0 ; 0x0e3: 0x00

kftmde[1].templ.secZn: 0 ; 0x0e4: 0x00

kftmde[1].templ.ub1spare: 0 ; 0x0e5: 0x00

kftmde[1].templ.ub2spare: 0 ; 0x0e6: 0x0000

kftmde[1].templ.dXsiz[0]: 4294967295 ; 0x0e8: 0xffffffff

kftmde[1].templ.dXsiz[1]: 0 ; 0x0ec: 0x00000000

kftmde[1].templ.dXsiz[2]: 0 ; 0x0f0: 0x00000000

kftmde[1].templ.iXsiz[0]: 4294967295 ; 0x0f4: 0xffffffff

kftmde[1].templ.iXsiz[1]: 0 ; 0x0f8: 0x00000000

kftmde[1].templ.iXsiz[2]: 0 ; 0x0fc: 0x00000000

kftmde[1].templ.entry: 0 ; 0x100: 0x00000000

kftmde[1].templ.idx: 0 ; 0x104: 0x00000000

kftmde[1].templ.spare[0]: 0 ; 0x108: 0x00000000

........

kftmde[1].templ.spare[10]: 0 ; 0x130: 0x00000000

kftmde[2].entry.incarn: 1 ; 0x134: A=1 NUMM=0x0

kftmde[2].entry.hash: 149841 ; 0x138: 0x00024951

kftmde[2].entry.refer.number:4294967295 ; 0x13c: 0xffffffff

kftmde[2].entry.refer.incarn: 0 ; 0x140: A=0 NUMM=0x0

kftmde[2].templ.name: CONTROLFILE ; 0x144: length=11

kftmde[2].templ.flags: 5 ; 0x164: S=1 S=0 S=1

kftmde[2].templ.redun: 19 ; 0x168: SCHE=0x1 NUMB=0x3

kftmde[2].templ.strpwdth: 8 ; 0x169: 0x08

kftmde[2].templ.strpsz: 17 ; 0x16a: 0x11

kftmde[2].templ.priZn: 0 ; 0x16b: 0x00

kftmde[2].templ.secZn: 0 ; 0x16c: 0x00

kftmde[2].templ.ub1spare: 0 ; 0x16d: 0x00

kftmde[2].templ.ub2spare: 0 ; 0x16e: 0x0000

kftmde[2].templ.dXsiz[0]: 4294967295 ; 0x170: 0xffffffff

kftmde[2].templ.dXsiz[1]: 0 ; 0x174: 0x00000000

kftmde[2].templ.dXsiz[2]: 0 ; 0x178: 0x00000000

kftmde[2].templ.iXsiz[0]: 4294967295 ; 0x17c: 0xffffffff

kftmde[2].templ.iXsiz[1]: 0 ; 0x180: 0x00000000

kftmde[2].templ.iXsiz[2]: 0 ; 0x184: 0x00000000

kftmde[2].templ.entry: 0 ; 0x188: 0x00000000

kftmde[2].templ.idx: 0 ; 0x18c: 0x00000000

kftmde[2].templ.spare[0]: 0 ; 0x190: 0x00000000

...........

kftmde[2].templ.spare[10]: 0 ; 0x1b8: 0x00000000

kftmde[3].entry.incarn: 1 ; 0x1bc: A=1 NUMM=0x0

kftmde[3].entry.hash: 72253 ; 0x1c0: 0x00011a3d

kftmde[3].entry.refer.number:4294967295 ; 0x1c4: 0xffffffff

kftmde[3].entry.refer.incarn: 0 ; 0x1c8: A=0 NUMM=0x0

kftmde[3].templ.name: ARCHIVELOG ; 0x1cc: length=10

kftmde[3].templ.flags: 4 ; 0x1ec: S=0 S=0 S=1

kftmde[3].templ.redun: 18 ; 0x1f0: SCHE=0x1 NUMB=0x2

kftmde[3].templ.strpwdth: 8 ; 0x1f1: 0x08

kftmde[3].templ.strpsz: 17 ; 0x1f2: 0x11

kftmde[3].templ.priZn: 0 ; 0x1f3: 0x00

kftmde[3].templ.secZn: 0 ; 0x1f4: 0x00

kftmde[3].templ.ub1spare: 0 ; 0x1f5: 0x00

kftmde[3].templ.ub2spare: 0 ; 0x1f6: 0x0000

kftmde[3].templ.dXsiz[0]: 4294967295 ; 0x1f8: 0xffffffff

kftmde[3].templ.dXsiz[1]: 0 ; 0x1fc: 0x00000000

kftmde[3].templ.dXsiz[2]: 0 ; 0x200: 0x00000000

kftmde[3].templ.iXsiz[0]: 4294967295 ; 0x204: 0xffffffff

kftmde[3].templ.iXsiz[1]: 0 ; 0x208: 0x00000000

kftmde[3].templ.iXsiz[2]: 0 ; 0x20c: 0x00000000

kftmde[3].templ.entry: 0 ; 0x210: 0x00000000

kftmde[3].templ.idx: 0 ; 0x214: 0x00000000

kftmde[3].templ.spare[0]: 0 ; 0x218: 0x00000000

.........

kftmde[3].templ.spare[10]: 0 ; 0x240: 0x00000000

.........

kftmde[13].entry.incarn: 1 ; 0x70c: A=1 NUMM=0x0

kftmde[13].entry.hash: 657713 ; 0x710: 0x000a0931

kftmde[13].entry.refer.number:4294967295 ; 0x714: 0xffffffff

kftmde[13].entry.refer.incarn: 0 ; 0x718: A=0 NUMM=0x0

kftmde[13].templ.name: TEST_TEMPLATE ; 0x71c: length=13

kftmde[13].templ.flags: 0 ; 0x73c: S=0 S=0 S=0

kftmde[13].templ.redun: 18 ; 0x740: SCHE=0x1 NUMB=0x2

kftmde[13].templ.strpwdth: 8 ; 0x741: 0x08

kftmde[13].templ.strpsz: 17 ; 0x742: 0x11

kftmde[13].templ.priZn: 0 ; 0x743: 0x00

kftmde[13].templ.secZn: 0 ; 0x744: 0x00

kftmde[13].templ.ub1spare: 0 ; 0x745: 0x00

kftmde[13].templ.ub2spare: 0 ; 0x746: 0x0000

kftmde[13].templ.dXsiz[0]: 4294967295 ; 0x748: 0xffffffff

kftmde[13].templ.dXsiz[1]: 0 ; 0x74c: 0x00000000

kftmde[13].templ.dXsiz[2]: 0 ; 0x750: 0x00000000

kftmde[13].templ.iXsiz[0]: 4294967295 ; 0x754: 0xffffffff

kftmde[13].templ.iXsiz[1]: 0 ; 0x758: 0x00000000

kftmde[13].templ.iXsiz[2]: 0 ; 0x75c: 0x00000000

kftmde[13].templ.entry: 0 ; 0x760: 0x00000000

kftmde[13].templ.idx: 0 ; 0x764: 0x00000000

kftmde[13].templ.spare[0]: 0 ; 0x768: 0x00000000

kftmde[13].templ.spare[1]: 0 ; 0x76c: 0x00000000

.........

可见，其实template directory的结构也很简单，主要是如下几部分：

1) kfbh,头部信息，跟前面其他的文章描述的一样，不累述;
2) kffdnd,kffdnd,从上面输出的信息，我们不难猜测，这部分信息其实就是用来定位和描述block在目录树中的具体位置的。
跟前面描述disk directory的kffdnd结构是一样的，所以这里也不多说。
3) kftmde,这部分结构主要是包括template模板的详细信息，如条带大小，宽度等信息. 下面详细描述该部分内容：
kftmde[0].entry.incarn:               1 ; 0x024: A=1 NUMM=0x0
kftmde[0].entry.hash:            616561 ; 0x028: 0x00096871  --hash值,无太大实际意义
kftmde[0].entry.refer.number:4294967295 ; 0x02c: 0xffffffff  ---指向下一层的block号
kftmde[0].entry.refer.incarn:         0 ; 0x030: A=0 NUMM=0x0
kftmde[0].templ.name:     PARAMETERFILE ; 0x034: length=13   --template模板名称
kftmde[0].templ.flags:                4 ; 0x054: S=0 S=0 S=1 --标志信息
kftmde[0].templ.redun:               18 ; 0x058: SCHE=0x1 NUMB=0x2 --表示冗余级别，17表示unprot,18表示MIRROR，19表示high.
kftmde[0].templ.strpwdth:             8 ; 0x059: 0x08  ---表示条带宽度
kftmde[0].templ.strpsz:              17 ; 0x05a: 0x11  ---表示条带大小
kftmde[0].templ.priZn:                0 ; 0x05b: 0x00
kftmde[0].templ.secZn:                0 ; 0x05c: 0x00
kftmde[0].templ.ub1spare:             0 ; 0x05d: 0x00  ---下面这部分内容都没有什么实际意义
kftmde[0].templ.ub2spare:             0 ; 0x05e: 0x0000
kftmde[0].templ.dXsiz[0]:    4294967295 ; 0x060: 0xffffffff
kftmde[0].templ.dXsiz[1]:             0 ; 0x064: 0x00000000
kftmde[0].templ.dXsiz[2]:             0 ; 0x068: 0x00000000
kftmde[0].templ.iXsiz[0]:    4294967295 ; 0x06c: 0xffffffff
kftmde[0].templ.iXsiz[1]:             0 ; 0x070: 0x00000000
kftmde[0].templ.iXsiz[2]:             0 ; 0x074: 0x00000000
kftmde[0].templ.entry:                0 ; 0x078: 0x00000000
kftmde[0].templ.idx:                  0 ; 0x07c: 0x00000000
kftmde[0].templ.spare[0]:             0 ; 0x080: 0x00000000

1) kfbh,头部信息，跟前面其他的文章描述的一样，不累述;

2) kffdnd,kffdnd,从上面输出的信息，我们不难猜测，这部分信息其实就是用来定位和描述block在目录树中的具体位置的。

跟前面描述disk directory的kffdnd结构是一样的，所以这里也不多说。

3) kftmde,这部分结构主要是包括template模板的详细信息，如条带大小，宽度等信息. 下面详细描述该部分内容：

kftmde[0].entry.incarn: 1 ; 0x024: A=1 NUMM=0x0

kftmde[0].entry.hash: 616561 ; 0x028: 0x00096871 --hash值,无太大实际意义

kftmde[0].entry.refer.number:4294967295 ; 0x02c: 0xffffffff ---指向下一层的block号

kftmde[0].entry.refer.incarn: 0 ; 0x030: A=0 NUMM=0x0

kftmde[0].templ.name: PARAMETERFILE ; 0x034: length=13 --template模板名称

kftmde[0].templ.flags: 4 ; 0x054: S=0 S=0 S=1 --标志信息

kftmde[0].templ.redun: 18 ; 0x058: SCHE=0x1 NUMB=0x2 --表示冗余级别，17表示unprot,18表示MIRROR，19表示high.

kftmde[0].templ.strpwdth: 8 ; 0x059: 0x08 ---表示条带宽度

kftmde[0].templ.strpsz: 17 ; 0x05a: 0x11 ---表示条带大小

kftmde[0].templ.priZn: 0 ; 0x05b: 0x00

kftmde[0].templ.secZn: 0 ; 0x05c: 0x00

kftmde[0].templ.ub1spare: 0 ; 0x05d: 0x00 ---下面这部分内容都没有什么实际意义

kftmde[0].templ.ub2spare: 0 ; 0x05e: 0x0000

kftmde[0].templ.dXsiz[0]: 4294967295 ; 0x060: 0xffffffff

kftmde[0].templ.dXsiz[1]: 0 ; 0x064: 0x00000000

kftmde[0].templ.dXsiz[2]: 0 ; 0x068: 0x00000000

kftmde[0].templ.iXsiz[0]: 4294967295 ; 0x06c: 0xffffffff

kftmde[0].templ.iXsiz[1]: 0 ; 0x070: 0x00000000

kftmde[0].templ.iXsiz[2]: 0 ; 0x074: 0x00000000

kftmde[0].templ.entry: 0 ; 0x078: 0x00000000

kftmde[0].templ.idx: 0 ; 0x07c: 0x00000000

kftmde[0].templ.spare[0]: 0 ; 0x080: 0x00000000

到这里，基本上asm template directory的结构大概描述完了，比较简单，而且这部分内容通常也不需要去关注，大家了解下即可。
上面提到了asm 条带，我这里就补充一点关于asm条带方面的内容。
在10g中，关于asm条带宽度和大小主要是由如下两个参数在空中：

SQL> select * from V$version where rownum < 3;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
SQL> show parameter asm_strip
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
_asm_stripesize                      integer     131072  --默认是128k
_asm_stripewidth                     integer     8       --8个条带大小
SQL>

SQL> select * from V$version where rownum < 3;

BANNER

----------------------------------------------------------------

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod

PL/SQL Release 10.2.0.1.0 - Production

SQL> show parameter asm_strip

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

_asm_stripesize integer 131072 --默认是128k

_asm_stripewidth integer 8 --8个条带大小

SQL>

你会发现stripsize * stripwidth 恰好是1m，这也正是我们的AU size大小，而1m通常也是大多数操作系统所能达到的单次最大io量。
asm 的条带分为两种COARSE和FINE，也被称为粗条带和细条带。
粗条带，默认就等于你的AU size，比如我这里au size为1m，那么粗条带大小就是1m，这种情况下的条带，通常实用于连续性的大IO操作，例如全表扫描。
细条带，默认是128k，8个条带组成一个AU，这种条带类型通常适用于对于读写延迟比较敏感的文件，比如redo logfile,controlfile。
从我前面10gR2的查询结果可以看出，其中也就redo和controlfile以及flashback是fine类型的，其他的均为粗条带，下面我进行一个简单的分类：

---默认是粗条带模板           ---默认是细条带模板                       
PARAMETERFILE                 CONTROLFILE
DUMPSET                       ONLINELOG  
ARCHIVELOG                    FLASHBACK  
DATAFILE                                
TEMPFILE
BACKUPSET
AUTOBACKUP
XTRANSPORT
CHANGETRACKING
DATAGUARDCONFIG

---默认是粗条带模板 ---默认是细条带模板

PARAMETERFILE CONTROLFILE

DUMPSET ONLINELOG

ARCHIVELOG FLASHBACK

DATAFILE

TEMPFILE

BACKUPSET

AUTOBACKUP

XTRANSPORT

CHANGETRACKING

DATAGUARDCONFIG

关于asm的条带大小，其实跟我们平常说讲的存储条带是一样的，比如aix中对lv进行条带。oracle官方文档的推荐值是要求你设置条带大小
最少为2*DB_FILE_MULTIBLOCK_READ_COUNT. 然而，通常来讲，我们都推荐设置为128k甚至更高的值。
在11gR2中，我发现asm相关的参数多了很多，如下：

SQL> select * from v$version where rownum < 3;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
PL/SQL Release 11.2.0.2.0 - Production
SQL> show parameter _asm
NAME                                   TYPE        VALUE
------------------------------------   ----------- ------------------------------
_asm_acd_chunks                        integer     1
_asm_admin_with_sysdba                 boolean     FALSE
_asm_allow_lvm_resilvering             boolean     TRUE
_asm_allow_only_raw_disks              boolean     TRUE
_asm_ausize                            integer     1048576
_asm_automatic_rezone                  boolean     TRUE
_asm_avoid_pst_scans                   boolean     TRUE
_asm_blksize                           integer     4096
_asm_check_for_misbehaving_cf_clients  boolean     FALSE                               
_asm_compatibility                     string      10.1
_asm_dba_threshold                     integer     0
_asm_dbmsdg_nohdrchk                   boolean     FALSE
_asm_diag_dead_clients                 boolean     FALSE
_asm_direct_con_expire_time            integer     120
_asm_disable_amdu_dump                 boolean     FALSE
_asm_disable_async_msgs                boolean     FALSE
_asm_disable_multiple_instance_check   boolean     FALSE
_asm_disable_profilediscovery          boolean     FALSE
_asm_disable_smr_creation              boolean     FALSE
_asm_disk_repair_time                  integer     14400
_asm_emulate_nfs_disk                  boolean     FALSE
_asm_emulmax                           integer     10000
_asm_emultimeout                       integer     0
_asm_evenread                          integer     0
_asm_evenread_alpha                    integer     0
_asm_evenread_alpha2                   integer     0
_asm_evenread_faststart                integer     0
_asm_fail_random_rx                    boolean     FALSE
_asm_fob_tac_frequency                 integer     9
_asm_force_quiesce                     boolean     FALSE
_asm_hbeatwaitquantum                  integer     2
_asm_imbalance_tolerance               integer     3
_asm_instlock_quota                    integer     0
_asm_iostat_latch_count                integer     31
_asm_kfdpevent                         integer     0
_asm_kfioevent                         integer     0
_asm_kill_unresponsive_clients         boolean     TRUE
_asm_libraries                         string      ufs
_asm_log_scale_rebalance               boolean     FALSE
_asm_lsod_bucket_size                  integer     13
_asm_max_cod_strides                   integer     5
_asm_max_redo_buffer_size              integer     2097152
_asm_maxio                             integer     1048576
_asm_partner_target_disk_part          integer     8
_asm_partner_target_fg_rel             integer     4
_asm_primary_load                      integer     1
_asm_primary_load_cycles               boolean     TRUE
_asm_random_zone                       boolean     FALSE
_asm_rebalance_plan_size               integer     120
_asm_rebalance_space_errors            integer     4
_asm_repairquantum                     integer     60
_asm_reserve_slaves                    boolean     TRUE
_asm_root_directory                    string      ASM
_asm_runtime_capability_volume_support boolean     FALSE                                    
_asm_secondary_load                    integer     10000
_asm_secondary_load_cycles             boolean     FALSE
_asm_serialize_volume_rebalance        boolean     FALSE
_asm_shadow_cycle                      integer     3
_asm_skip_rename_check                 boolean     FALSE
_asm_skip_resize_check                 boolean     FALSE
_asm_storagemaysplit                   boolean     FALSE
_asm_stripesize                        integer     131072
_asm_stripewidth                       integer     8
_asm_sync_rebalance                    boolean     FALSE
_asm_usd_batch                         integer     64
_asm_wait_time                         integer     18
_asmlib_test                           integer     0
_asmsid                                string      asm
_ges_diagnostics_asm_dump_level        integer     11
_lm_asm_enq_hashing                    boolean     TRUE

SQL> select * from v$version where rownum < 3;

BANNER

--------------------------------------------------------------------------------

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production

PL/SQL Release 11.2.0.2.0 - Production

SQL> show parameter _asm

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

_asm_acd_chunks integer 1

_asm_admin_with_sysdba boolean FALSE

_asm_allow_lvm_resilvering boolean TRUE

_asm_allow_only_raw_disks boolean TRUE

_asm_ausize integer 1048576

_asm_automatic_rezone boolean TRUE

_asm_avoid_pst_scans boolean TRUE

_asm_blksize integer 4096

_asm_check_for_misbehaving_cf_clients boolean FALSE

_asm_compatibility string 10.1

_asm_dba_threshold integer 0

_asm_dbmsdg_nohdrchk boolean FALSE

_asm_diag_dead_clients boolean FALSE

_asm_direct_con_expire_time integer 120

_asm_disable_amdu_dump boolean FALSE

_asm_disable_async_msgs boolean FALSE

_asm_disable_multiple_instance_check boolean FALSE

_asm_disable_profilediscovery boolean FALSE

_asm_disable_smr_creation boolean FALSE

_asm_disk_repair_time integer 14400

_asm_emulate_nfs_disk boolean FALSE

_asm_emulmax integer 10000

_asm_emultimeout integer 0

_asm_evenread integer 0

_asm_evenread_alpha integer 0

_asm_evenread_alpha2 integer 0

_asm_evenread_faststart integer 0

_asm_fail_random_rx boolean FALSE

_asm_fob_tac_frequency integer 9

_asm_force_quiesce boolean FALSE

_asm_hbeatwaitquantum integer 2

_asm_imbalance_tolerance integer 3

_asm_instlock_quota integer 0

_asm_iostat_latch_count integer 31

_asm_kfdpevent integer 0

_asm_kfioevent integer 0

_asm_kill_unresponsive_clients boolean TRUE

_asm_libraries string ufs

_asm_log_scale_rebalance boolean FALSE

_asm_lsod_bucket_size integer 13

_asm_max_cod_strides integer 5

_asm_max_redo_buffer_size integer 2097152

_asm_maxio integer 1048576

_asm_partner_target_disk_part integer 8

_asm_partner_target_fg_rel integer 4

_asm_primary_load integer 1

_asm_primary_load_cycles boolean TRUE

_asm_random_zone boolean FALSE

_asm_rebalance_plan_size integer 120

_asm_rebalance_space_errors integer 4

_asm_repairquantum integer 60

_asm_reserve_slaves boolean TRUE

_asm_root_directory string ASM

_asm_runtime_capability_volume_support boolean FALSE

_asm_secondary_load integer 10000

_asm_secondary_load_cycles boolean FALSE

_asm_serialize_volume_rebalance boolean FALSE

_asm_shadow_cycle integer 3

_asm_skip_rename_check boolean FALSE

_asm_skip_resize_check boolean FALSE

_asm_storagemaysplit boolean FALSE

_asm_stripesize integer 131072

_asm_stripewidth integer 8

_asm_sync_rebalance boolean FALSE

_asm_usd_batch integer 64

_asm_wait_time integer 18

_asmlib_test integer 0

_asmsid string asm

_ges_diagnostics_asm_dump_level integer 11

_lm_asm_enq_hashing boolean TRUE

关于asm template directory，个人认为没有太大的实际意义，了解即可，所以这篇文章内容就到此为止，后面会继续。

One Response to “oracle asm剖析系列(6)–template directory”

Sd_semiter Says:

1月 16, 2013 at 上午 6:47

紧跟大师的脚步

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oracle asm剖析系列(6)–template directory

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