DG在線日志組大小修改
環境(單實例,Centos 6.5 X64,oracle 10.2.0.5,filesystem存儲)
REDO ONLINE LOG
select * from v$logfile where type='STANDBY'; ＃查詢為standby log 三組
STANDBY LOG
select * from v$logfile where type<>'STANDBY'; #查詢ONLINE LOG 為四組
1.備庫standby log 添加
alter database recover managed standby database cancel;#取消APPLIED
alter database add standby logfile group ８
('/u01/app/oracle/oradata/netdata/st_redo08a.log','/u01/app/oracle/oradata/netdata/st_redo08b.log') size 300M;
alter database add standby logfile group 9
('/u01/app/oracle/oradata/netdata/st_redo09a.log','/u01/app/oracle/oradata/netdata/st_redo09b.log') size 300M;
alter database add standby logfile group 10
('/u01/app/oracle/oradata/netdata/st_redo10a.log','/u01/app/oracle/oradata/netdata/st_redo10b.log') size 300M;
alter database add standby logfile group 11
('/u01/app/oracle/oradata/netdata/st_redo11a.log','/u01/app/oracle/oradata/netdata/st_redo11b.log') size 300M;
2.刪除備庫standby log
alter database drop logfile group 4;
alter database drop logfile group 5;
alter database drop logfile group 6;
alter database drop logfile group 7;
如果出現以下錯誤，在主庫上切換一下日志
ERROR at line 1:
ORA-00261: log 4 of thread 1 is being archived or modified
ORA-00312: online log 4 thread 1: '/u01/app/oracle/oradata/netdata/st_redo04b.log'
3.主庫standbylog添加
alter database add standby logfile group ８
('/u01/app/oracle/oradata/netdata/st_redo08a.log','/u01/app/oracle/oradata/netdata/st_redo08b.log') size 300M;
alter database add standby logfile group 9
('/u01/app/oracle/oradata/netdata/st_redo09a.log','/u01/app/oracle/oradata/netdata/st_redo09b.log') size 300M;
alter database add standby logfile group 10
('/u01/app/oracle/oradata/netdata/st_redo10a.log','/u01/app/oracle/oradata/netdata/st_redo10b.log') size 300M;
alter database add standby logfile group 11
('/u01/app/oracle/oradata/netdata/st_redo11a.log','/u01/app/oracle/oradata/netdata/st_redo11b.log') size 300M;
4.刪除主庫舊的standby log
alter database drop logfile group 4;
alter database drop logfile group 5;
alter database drop logfile group 6;
alter database drop logfile group 7;
5．主庫添加新的ONLINE REDO LOG
alter database add standby logfile group 12
('/u01/app/oracle/oradata/netdata/st_redo12a.log','/u01/app/oracle/oradata/netdata/st_redo12b.log') size 300M;
alter database add standby logfile group 13
('/u01/app/oracle/oradata/netdata/st_redo13a.log','/u01/app/oracle/oradata/netdata/st_redo13b.log') size 300M;
alter database add standby logfile group 14
('/u01/app/oracle/oradata/netdata/st_redo14a.log','/u01/app/oracle/oradata/netdata/st_redo14b.log') size 300M;
6.主庫刪除舊的ONLINE REDOLOG
刪除之前切文檔，首先查看是不是ACTIVE或者是INACTIVE
不是INACTIVE 多切幾次歸檔
alter system logfile switch
alter system checkpoint
alter database drop logfile group 1;
alter database drop logfile group 2;
alter database drop logfile group 3;
7.備庫添加新的ONLINE REDO LOG
alter system set standby_file_management='MANUAL';
alter database add standby logfile group 12
('/u01/app/oracle/oradata/netdata/st_redo12a.log','/u01/app/oracle/oradata/netdata/st_redo12b.log') size 300M;
alter database add standby logfile group 13
('/u01/app/oracle/oradata/netdata/st_redo13a.log','/u01/app/oracle/oradata/netdata/st_redo13b.log') size 300M;
alter database add standby logfile group 14
('/u01/app/oracle/oradata/netdata/st_redo14a.log','/u01/app/oracle/oradata/netdata/st_redo14b.log') size 300M;
8.刪除備庫舊的ONLINE REDO LOG
SQL> alter database drop logfile group 1;
alter database drop logfile group 1
*
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of instance netdata (thread 1)
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/netdata/redo01.log'
[oracle@oracle10g-dg1-213-100 ~]$ oerr ora 01624
01624, 00000, "log %s needed for crash recovery of instance %s (thread %s)"
// *Cause: A log cannot be dropped or cleared until the thread's checkpoint
// has advanced out of the log.
// *Action: If the database is not open, then open it. Crash recovery will
// advance the checkpoint. If the database is open force a global
// checkpoint. If the log is corrupted so that the database cannot
// be opened, it may be necessary to do incomplete recovery until
// cancel at this log.
嘗試clean logfile
ALTER DATABASE CLEAR LOGFILE GROUP 1
*
ERROR at line 1:
ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/netdata/redo01.log'
[oracle@oracle10g-dg1-213-100 netdata]$ oerr ora 19527
19527, 00000, "physical standby redo log must be renamed"
// *Cause: The CLEAR LOGFILE command was used at a physical standby
// database. This command cannot be used at a physical standby
// database unless the LOG_FILE_NAME_CONVERT initialization
// parameter is set. This is required to avoid overwriting
// the primary database's logfiles.
// *Action Set the LOG_FILE_NAME_CONVERT initialization parameter.
LOG_FILE_NAME_CONVERT參數未初始化
SQL> alter system set log_file_name_convert='/u01/app/oracle/oradata/netdata/','/u01/app/oracle/oradata/netdata/' scope=spfile;
System altered.
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 704643072 bytes
Fixed Size 2098912 bytes
Variable Size 184551712 bytes
Database Buffers 511705088 bytes
Redo Buffers 6287360 bytes
SQL> alter database mount standby database;
Database altered.
SQL> ALTER DATABASE CLEAR LOGFILE GROUP 1;
Database altered.
SQL> ALTER DATABASE CLEAR LOGFILE GROUP 2;
Database altered.
SQL> ALTER DATABASE CLEAR LOGFILE GROUP 3;
Database altered.
SQL> alter database drop logfile group 1;
Database altered.
SQL> alter database drop logfile group 2;
Database altered.
SQL> alter database drop logfile group 3;
Database altered.
SQL> alter system set standby_file_management='AUTO' scope=both;
System altered.
SQL> alter database recover managed standby database disconnect from session;
Database altered.
