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在oracle 12c引进了pdb的概念,但重建控制文件的过程还是完全和no-cdb(以前版本ORACLE)相同
数据库启动异常
idle> startup ORACLE instance started. Total System Global Area 521936896 bytes Fixed Size 2404552 bytes Variable Size 205524792 bytes Database Buffers 306184192 bytes Redo Buffers 7823360 bytes ORA-00205: error in identifying control file, check alert log for more info idle> select * from v$version; BANNER CON_ID -------------------------------------------------------------------------------- ---------- Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production 0 PL/SQL Release 12.1.0.1.0 - Production 0 CORE 12.1.0.1.0 Production 0 TNS for 64-bit Windows: Version 12.1.0.1.0 - Production 0 NLSRTL Version 12.1.0.1.0 - Production 0
alert日志信息
Wed Mar 19 20:30:20 2014 ALTER DATABASE MOUNT Wed Mar 19 20:30:20 2014 ORA-00210: ??????????? ORA-00202: ????: ''E:\APP\XIFENFEI\ORADATA\CDB\CONTROL01.CTL'' ORA-27048: skgfifi: ???????? OSD-04001: 逻辑块大小无效 ORA-205 signalled during: ALTER DATABASE MOUNT...
利用strings命令找出来数据文件和联机日志路径
E:\APP\XIFENFEI\ORADATA\CDB\REDO04.LOG E:\APP\XIFENFEI\ORADATA\CDB\REDO06.LOG E:\APP\XIFENFEI\ORADATA\CDB\REDO05.LOG E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF E:\APP\XIFENFEI\ORADATA\CDB\TEMP01.DBF E:\APP\XIFENFEI\ORADATA\CDB\PDB\TEMP01.DBF
如果有完整的alert日志也可以通过alert日志来分析数据文件路径和redo路径;
通过alert日志分析数据库编码,如果没有alert日志通过分析prop$分析编码;
redo group 可以在alert日志中查看,写入错误,在创建时候会提示正确值;
redo size 可以查看redo file,也可以先写入错误值,创建时候会提示正确block数量
重建控制文件
idle> CREATE CONTROLFILE REUSE DATABASE "CDB" NORESETLOGS FORCE LOGGING ARCHIVELOG
2 MAXLOGFILES 16
3 MAXLOGMEMBERS 3
4 MAXDATAFILES 100
5 MAXINSTANCES 8
6 MAXLOGHISTORY 2921
7 LOGFILE
8 GROUP 4 'E:\APP\XIFENFEI\ORADATA\CDB\REDO04.LOG' size 50M,
9 GROUP 6 'E:\APP\XIFENFEI\ORADATA\CDB\REDO06.LOG' size 50M,
10 GROUP 5 'E:\APP\XIFENFEI\ORADATA\CDB\REDO05.LOG' size 50M
11 DATAFILE
12 'E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF',
13 'E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF',
14 'E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF',
15 'E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF',
16 'E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF',
17 'E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF',
18 'E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF',
19 'E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF',
20 'E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF'
21 CHARACTER SET ZHS16GBK
22 ;
控制文件已创建。
idle> recover database;
完成介质恢复。
idle> alter database open;
数据库已更改。
idle> show pdbs;
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB MOUNTED
idle> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
E:\APP\XIFENFEI\ORADATA\CDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDBSEED\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSTEM01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\SYSAUX01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\PDB\PDB_USERS01.DBF
E:\APP\XIFENFEI\ORADATA\CDB\UNDOTBS01.DBF
已选择 9 行。
CDB_CDB$ROOT@SYS> alter session set container=pdb;
Session altered.
CDB_CDB$ROOT@SYS> alter database open;
Database altered.
数据库在mount状态重建控制文件请参考:重建控制文件
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