ORA-600[kcratr_scan_lastbwr]論理不良ブロック解決

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ORA-600[kcratr_scan_lastbwr]論理不良ブロック解決
 
データベースのバージョン:
11.2.0.3
問題:
今日、テストデータベースを起動したとき、dbがopenできないことに気づき、次のようにエラーが発生しました.

ERROR at line 1:

ORA-00600: internal error code, arguments: [kcratr_scan_lastbwr], [], [], [],[], [], [], [], [], [], [], []

解決プロセス:
1、alertログをチェックする

Mon Jul 22 11:35:12 2013

ALTER DATABASE OPEN

Beginning crash recovery of 1 threads

 parallel recovery started with 3 processes

Started redo scan

Hex dump of (file 3, block 272) in trace file /opt/oracle/diag/rdbms/ebai/ebai/trace/ebai_ora_4930.trc

Reading datafile '/oracle/oradata/ebai/undotbs01.dbf' for corruption at rdba: 0x00c00110 (file 3, block 272)

Reread (file 3, block 272) found same corrupt data (logically corrupt)

Write verification failed for File 3 Block 272 (rdba 0xc00110)

Errors in file /opt/oracle/diag/rdbms/ebai/ebai/trace/ebai_ora_4930.trc  (incident=71353):

ORA-00600: internal error code, arguments: [kcratr_scan_lastbwr], [], [], [], [], [], [], [], [], [], [], []

Incident details in: /opt/oracle/diag/rdbms/ebai/ebai/incident/incdir_71353/ebai_ora_4930_i71353.trc

Use ADRCI or Support Workbench to package the incident.

See Note 411.1 at My Oracle Support for error and packaging details.

Aborting crash recovery due to error 600

Errors in file /opt/oracle/diag/rdbms/ebai/ebai/trace/ebai_ora_4930.trc:

ORA-00600: internal error code, arguments: [kcratr_scan_lastbwr], [], [], [], [], [], [], [], [], [], [], []

Errors in file /opt/oracle/diag/rdbms/ebai/ebai/trace/ebai_ora_4930.trc:

ORA-00600: internal error code, arguments: [kcratr_scan_lastbwr], [], [], [], [], [], [], [], [], [], [], []

ORA-600 signalled during: ALTER DATABASE OPEN...

Dumping diagnostic data in directory=[cdmp_20130722113516], requested by (instance=1, osid=4930), summary=[incident=71353].

Mon Jul 22 11:36:11 2013

Sweep [inc][71353]: completed

Sweep [inc2][71353]: completed

2、問題の分析と解決
alertログでは実ははっきり言っていますが、実際にはtraceファイルもほとんど見る必要はありません.インターネットを利用して简単にgoogleして、解决方法があって、直接gaしましょう. 

suse11sp2:/oracle/oraarch> sqlplus / as sysdba 

SQL*Plus: Release 11.2.0.3.0 Production on Mon Jul 22 14:45:49 2013 

Copyright (c) 1982, 2011, Oracle.  All rights reserved. 

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options 

SQL> select status from v$instance; 

STATUS

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

MOUNTED

 

SQL> select open_mode from v$database; 

OPEN_MODE

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

MOUNTED 

SQL> recover database;

Media recovery complete.

SQL>

SQL>

SQL> alter database open; 

Database altered. 

SQL>

SQL>

SQL> select status from v$instance; 

STATUS

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

OPEN 

SQL> select open_mode from v$database; 

OPEN_MODE

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

READ WRITE

 

3、処理効果の検証
クリーンクローズを1回実行し、オープンし、エラーが報告されず、問題の処理が完了します. 

SQL> alter system checkpoint; 

System altered. 

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>

SQL>

SQL>

SQL>

SQL> startup

ORACLE instance started. 

Total System Global Area 4125462528 bytes

Fixed Size                  2234840 bytes

Variable Size             956302888 bytes

Database Buffers         3154116608 bytes

Redo Buffers               12808192 bytes

Database mounted.

Database opened.

SQL>

SQL>