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現象
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
Red Hat Enterprise Linux Server release 5.3 (Tikanga) 64bit
在主庫執行將文件從4G改小為2G后
ALTER DATABASE DATAFILE '/data/orcl/undotbs04.dbf' RESIZE 2000M;
Standby DB中
SELECT OPEN_MODE FROM V$database
READ ONLY WITH APPLY 變為了READ ONLY
Standby alert.log
Wed Mar 25 13:24:25 2015
Errors in file /u01/product/diag/rdbms/orcldg/orcl/trace/orcl_mrp0_7554.trc (incident=592209):
ORA-00600: internal error code, arguments: [3020], [6], [2343], [25168167], [], [], ORA-10567: Redo is inconsistent with data block (file# 6, block# 2343, file offset is 38387712 bytes)
ORA-10564: tablespace UNDOTBS1
ORA-01110: data file 6: '/data/orcl/undotbs03.dbf'
ORA-10560: block type 'KTU UNDO BLOCK'
Incident details in: /u01/product/diag/rdbms/orcldg/orcl/incident/incdir_592209/orcl_mrp0_7554_i592209.trc
Recovery Slave PR05 previously exited with exception 600
Wed Mar 25 13:24:26 2015
MRP0: Background Media Recovery terminated with error 448
Errors in file /u01/product/diag/rdbms/orcldg/orcl/trace/orcl_pr00_7689.trc:
ORA-00448: normal completion of background process
Managed Standby Recovery not using Real Time Apply
Recovery interrupted!
Trace dumping is performing id=[cdmp_20150325132426]
Recovered data files to a consistent state at change 8924400385
Errors in file /u01/product/diag/rdbms/orcldg/orcl/trace/orcl_pr00_7689.trc:
ORA-00448: normal completion of background process
Errors in file /u01/product/diag/rdbms/orcldg/orcl/trace/orcl_mrp0_7554.trc:
ORA-00600: internal error code, arguments: [3020], [6], [2343], [25168167], [], [], [],
ORA-10567: Redo is inconsistent with data block (file# 6, block# 2343, file offset is 38387712 bytes)
ORA-10564: tablespace UNDOTBS1
ORA-01110: data file 6: '/data/orcl/undotbs03.dbf'
ORA-10560: block type 'KTU UNDO BLOCK'
MRP0: Background Media Recovery process shutdown (orcl)
Wed Mar 25 13:24:28 2015
Sweep [inc][592249]: completed
Sweep [inc][592209]: completed
Sweep [inc2][592249]: completed
Sweep [inc2][592209]: completed
手動執行alter database recover managed standby database using current logfile disconnect 報錯依舊。關閉standby再開啟問題依舊
處理:
主庫alter tablespace UNDOTBS1 begin backup;
主庫Scp /data/orcl/undotbs03.dbf -> 從庫
主庫alter tablespace UNDOTBS1 end backup;
主庫 alter database create standby controlfile as ‘/data/standby.ctl’
主庫Scp /data/standby.ctl -> 從庫
從庫 startup
ALTER DATABASE ADD STANDBY LOGFILE GROUP 15 ('/data/orcl/standbylog15.log') size 50M;
……
alter database recover managed standby database using current logfile disconnect
恢復OK
Bug 11689702 ORA-600 [3020] during recovery after datafile RESIZE (to smaller size)
This note gives a brief overview of bug 11689702.
The content was last updated on: 28-JUN-2013
Click here for details of each of
the sections below.
Affects:
Product (Component) |
Oracle Server (Rdbms) |
Range of versions believed to be affected |
Versions >= 11.2 but BELOW 12.1 |
Versions confirmed as being affected |
|
Platforms affected |
Generic (all / most platforms affected) |
Fixed:
This issue is fixed in |
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Symptoms: |
Related To: |
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Description
Media recovery (either at a standby or standard media recovery)
may get stuck and stop due to an ORA-600 [3020] following a datafile
resize operation (to resize a datafile smaller) on the primary.
Rediscovery Notes:
Look for all the following:
- Media recovery fails with ORA-600 [3020],[<file#>],[<block#>]
- Any attempt to restart media recovery fails with exactly the
same error (most likely this is a primary/standby congifuration
and the media recovery is failing with ORA-600 [3020] on the
standby)
- look at the alert log for the time period covering the media
recovery session, and search for the ORA-600 [3020] message,
then:
1. see which log seq# was being applied at the time of the
ORA-600 [3020], and then look at
2. see which filename it was reported for:
ORA-1110: data file <file#>: '<datafile_name>'
then look at the alert log messages that were generated while
that log seq# was current and originally being written to,
there should be a resize operation for that datafile:
"alter database datafile '<datafile_filename>' resize <n>"
The resize should be resizing the datafile smaller, but it
will only be possible to confirm this if there are other
resize operations for the same file earlier in the alert log
to prove the datafile initially had a larger size just prior
to this resize.
- the main ORA-600 [3020] tracefile (not the incident tracefile)
should have the following contents:
-----
KCOX_FUTURE: CHANGE IN FUTURE OF BLOCK
and
RECOVERY STUCK AT BLOCK <block#> OF FILE <file#>
and
CHANGE ...
(this is a dump of the individual redo change vector which
recovery got stuck on and could not apply)
and
ORA-01110: data file <file#>: '<datafile_name>'
ORA-10560: block type ...
and
buffer tsn: ...
(this is a dump of the cache header stored at the front of
the block, which the redo change could not be applied to)
and
DUMP REDO
(a dump of the recent redo, filtered for the file#/block#)
END OF DUMP REDO
and
ORA-00600: [3020], [<file#>], [<block#>], [<DBA>]
ORA-10567: Redo is inconsistent with data block (file# ...
ORA-10564: tablespace <tablespace_name>
ORA-01110: data file <file#>: '<datafile_name>'
ORA-10560: block type ...
-----
examine the redo dump, and find the redo record containing the
change vector (for file#/block#) which recovery got stuck on -
it should appear near the end of the redo dump, then go backwards
from that redo record, to find the immediately previous change to
file#/block#, and note the scn of that redo record, then at that
same scn there should be a datafile resize marker redo record
which shinks the file (ie old size is greater than new size).
Eg:
REDO RECORD - Thread:1 RBA: 0x000004.00001394.0198 LEN: 0x0128 VLD: 0x01
SCN: 0x0000.00072bbd SUBSCN: 43 02/28/2011 11:49:14
CHANGE #2 TYP:0 CLS:1 AFN:4 DBA:0x0100000c OBJ:64299 SCN:0x0000.00072bbd
SEQ:42 OP:11.3 ENC:0 RBL:0
...
REDO RECORD - Thread:1 RBA: 0x000004.00001395.00d0 LEN: 0x0044 VLD: 0x01
SCN: 0x0000.00072bbd SUBSCN: 43 02/28/2011 11:49:14
CHANGE #1 MEDIA RECOVERY MARKER SCN:0x0000.00000000 SEQ:0 OP:17.4 ENC:0
Datafile resize marker - file: 4 old size: 12800 new size: 12672
...
REDO RECORD - Thread:1 RBA: 0x000004.00001396.0010 LEN: 0x0150 VLD: 0x05
SCN: 0x0000.00072bbf SUBSCN: 1 02/28/2011 11:49:14
Getting a Fix
Use one of the "Fixed" versions listed above
(for Patch Sets / bundles use the latest version available as
contents are cumulative - the "Fixed" version listed above is
the first version where the fix is included)
or
Click here for suggestions on how to get a fix for this issue
HOOKS INCLUDE:FIXHELP OERI:3020 "SQL:RESIZE" LIKELYAFFECTS XAFFECTS_11.2.0.1 XAFFECTS_V11020001 AFFECTS=11.2.0.1 XAFFECTS_11.2.0.2 XAFFECTS_V11020002 AFFECTS=11.2.0.2 XPRODID_5 PRODUCT_ID=5 PRODID-5 RDBMS XCOMP_RDBMS COMPONENT=RDBMS TAG_OERI TAG_RECOVERY TAG_STANDBY OERI RECOVERY STANDBY FIXED_11.2.0.2.5 FIXED_11.2.0.2.BP13 FIXED_11.2.0.2.GIPSU05 FIXED_11.2.0.3 FIXED_12.1.0.1 FIXED_WIN:B202P14
Please note: The above is a summary description only. Actual symptoms can vary. Matching to any symptoms here does not confirm that you are encountering this problem. For questions about this bug please consult Oracle Support. |
References
Bug:11689702 (This link will only
work for PUBLISHED bugs)
Note:245840.1 Information on the
sections in this article
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