之一 ：EVENT: CONTROLF
EVENT: CONTROLF
- Obtaining & Interpreting ControlFile
Dumps
------------------------------------------------------------------------------
ALTER SESSION SET EVENTS 'immediate trace name controlf level 10';
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
It is also sometimes useful to: "ALTER DATABASE BACKUP CONTROLFILE TO TRACE".
(From Oracle 7.1.x)
*DUMP OF CONTROL FILES, Seq # 202417 = 316b1
* FILE HEADER:
Software vsn=117502976=700f400, Compatibility Vsn=117477376=7009000
Db Id=4188500840=f9a77368, Db Name='ECI_RPT'
Control Seq=202417=316b1, File size=1238=4d6
File Number=0, Blksiz=512, File Type=4
==
Control Seq
Control file sequence number
==
File Number
No concept of file no for control files
==
File Size
This files Size (blocks)
==
Blksiz
This files block size
==
File Type
(See kcc.h)
KCCTYPCF
1
* control file *
KCCTYPRL
2
* redo log file *
KCCTYPDF
3
* vanilla db data file *
KCCTYPBC
4
* backup control file *
* DATABASE ENTRY:
(offset = 0x200, size = 144, max = 1, hi = 1)
DF Version: creation=0x700f400 compatable=0x700b000, Date
05/27/95 03:34:38
DB Name "ECI_RPT"
Database flags = 0x00000147
==
^^^^^^^^^^^^^^^^^^^(kcc.h)
KCCDIMRE 0x0001
* whether media recovery enabled *
KCCDICKD 0x0002
* if dictionary must be checked with control file *
KCCDIRLR 0x0004
* DB OPEN RESETLOGS required *
KCCDIJNK 0x0008
* junk value from beta - do not reuse this flag *
KCCDIMRC 0x0010
* was/is last mounted READ_COMPATIBLE *
KCCDICNV 0x0020
* control file was just created by convert from v6 *
KCCDIIRA 0x0040
* Incomplete Recovery Allowed when resetting logs *
KCCDIDBM 0x0080
* K_MLS - on next open DataBase Mac mode *
KCCDICCF 0x0100
* Controlfile was created with CREATE CONTROFILE *
Incmplt recovery scn: 0.06d3ac0c Resetlogs scn: 0.02811906 count: 0xc99f490
== ^^^ Last Incomplete recovery
^^^ Last Resetlogs
Redo Version: creation=0x700f400 compatable=0x700c000
#Data files = 204, #Online files = 1
== ^^^ Can derive no of OFFLINE files from these figures.
Database checkpoint: Thread=0 scn: 0.00000000
Threads: #Enabled=1, #Open=0, Head=0, Tail=0
enabled
threads:
01000000 00000000 00000000 00000000 00000000 00000000 ...
Max log members = 4, Max data members = 1
Log hist = 0, Arch list: Head=0, Tail=0, Force scn: 0.00000000
==
^^^^^^^^^ Size of Log history if being stored
* REDO THREAD ENTRIES:
(offset = 0x290, size = 92, max = 6, hi = 1)
* THREAD #1 - status:0x6 thread links forward:0 back:0
==
^^^^(kcc.h)
KCCRTOPN
0x01
* set if thread is OPeN *
KCCRTENB
0x02
* set if thread is ENaBled *
KCCRTPUB
0x04
* set if thread is enabled PUBlicly *
#logs:3 first:1 last:3 current:3 last used seq#:0x0
enabled at scn: 0.00000000 01/01/88 00:00:00
Checkpointed at scn: 0.00000000 01/01/88 00:00:00
thread:0 rba:(0.0.0)
enabled
threads:
00000000 00000000 00000000 00000000 00000000 00000000 ...
LOG FILE ENTRIES:
(offset = 0x4b8, size = 72, max = 96, hi = 3)
* LOG FILE #1:
(#
3) /opt/oracle/ECI_RPT/redo_log1.dbf
Thread 1 redo log links: forward=2 backward=0
siz=0x64000 seq=0x0 hws=0x0 bsz=512 nab=0x0 flg=0x1
== seq=Log Seq no, hws=Hdr write Seq# nab=Next available block (kcc.h)
== flg:
KCCLESPL
0x0001 * set if log file spooled *
KCCLENAL
0x0002 * set if No more ALocation may be done in log *
KCCLEUSM
0X0004 * if set USe Me as the next log to make current *
KCCLECUR
0x0008 * set if this is the current log *
Archive links: fwrd=0 back=0 Prev scn: 0.00000000
==
^^^Low SCN of PREVIOUS log
Low scn: 0.00000000 01/01/88 00:00:00
== ^^^SCN when log was switched INTO
Next scn: 0.00000000 01/01/88 00:00:00
== ^^^SCN After redo in this log (Ie: should == low of NEXT log)
...
* DATA FILE #1:
(#207) /usr/support/oracle/m4/pms505676/system_1_bpk.dbf
size=51200 bsize=2048 status=x213 head=207 tail=207 dup=1
==
^^^^(kcc.h)
KCCFESTS 0x0001 * belongs to System TableSpace *
KCCFEONL 0x0002 * file is ONLine *
KCCFERDE 0x0004 * ReaDing is Enabled *
KCCFECGE 0x0008 * ChanGing is Enabled *
KCCFEMRR 0x0010 * Media Recovery Required *
KCCFEGEM 0x0020 * Generate End hot backup Marker at next open *
KCCFECKD 0x0040 * File entry generated by check dictionary *
KCCFESOR 0x0080 * Save Offline scn Range at next checkpoint *
KCCFERMF 0x0100 * Renamed Missing File *
KCCFEGOI 0x0200 * Generate Off-line Immediate marker *
Checkpoint cnt:61191 scn: 0.06d3ac0c stop scn: ffff.ffffffff 05/27/95 03:34:39
== Last Checkpoint SCN ^^^^^^^^^^^^^^
^^^ Stop=fff implies OPEN or WARM backup
Creation Checkpointed at scn: 0.00000003 12/04/93 06:37:16
thread:0 rba:(0.0.0)
enabled
threads:
00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
Offline scn: 0.00000000
Online Checkpointed at scn: 0.00000000 01/01/88 00:00:00
thread:0 rba:(0.0.0)
...
之二 ：EVENT: FILE_HDRS
EVENT: FILE_HDRS
- Obtaining & Interpreting File Header
Dumps
------------------------------------------------------------------------------
ALTER SESSION SET EVENTS 'immediate trace name file_hdrs level 10';
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(From Oracle 7.1.x)
*DUMP OF DATA FILES: 209 files in database
*DATA FILE #1:
------------ NB: Here down is the control file info ---------
(#207) /usr/support/oracle/m4/pms505676/system_1_bpk.dbf
size=51200 bsize=2048 status=x213 head=207 tail=207 dup=1
==
^^^^(kcc.h)
KCCFESTS 0x0001 * belongs to System TableSpace *
KCCFEONL 0x0002 * file is ONLine *
KCCFERDE 0x0004 * ReaDing is Enabled *
KCCFECGE 0x0008 * ChanGing is Enabled *
KCCFEMRR 0x0010 * Media Recovery Required *
KCCFEGEM 0x0020 * Generate End hot backup Marker at next open *
KCCFECKD 0x0040 * File entry generated by check dictionary *
KCCFESOR 0x0080 * Save Offline scn Range at next checkpoint *
KCCFERMF 0x0100 * Renamed Missing File *
KCCFEGOI 0x0200 * Generate Off-line Immediate marker *
Checkpoint cnt:61191 scn: 0.06d3ac0c stop scn: ffff.ffffffff 05/27/95 03:34:39
==
^^^Stop=ffff implies OPEN,ABORT or WARM
Creation Checkpointed at scn: 0.00000003 12/04/93 06:37:16
thread:0 rba:(0.0.0)
enabled
threads:
00000000 00000000 00000000 00000000 00000000 00000000 ...
Offline scn: 0.00000000
Online Checkpointed at scn: 0.00000000 01/01/88 00:00:00
thread:0 rba:(0.0.0)
enabled
threads:
00000000 00000000 00000000 00000000 00000000 00000000 ...
* FILE HEADER:
------------Here down is from the file header------------------
Software vsn=117502976=700f400, Compatibility Vsn=117485568=700b000
Db Id=4188500840=f9a77368, Db Name='ECI_PD'
^^^ Oldest Usable Oracle Vers
Control Seq=202416=316b0, File size=51200=c800
==
^^^ Should be <= to Seq# in control file.
File Number=1, Blksiz=2048, File Type=3
==
^^^^^^^^^^^(kcc.h)
KCCTYPCF
1
* control file *
