DATAGUARD 添加修改REDOLOG大小

DG在线日志组大小修改

环境(单实例,Centos 6.5 X64,oracle 10.2.0.5,filesystem存储)

REDO ONLINE LOG

select * from v$logfile where type='STANDBY';　＃查询为standby log　三组

STANDBY LOG

select * from v$logfile where type<>'STANDBY'; #查询ONLINE LOG 为四组



1.备库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.删除备库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;



如果出现以下错误，在主库上切换一下日志

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.主库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.删除主库旧的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．主库添加新的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.主库删除旧的ONLINE REDOLOG

删除之前切文档，首先查看是不是ACTIVE或者是INACTIVE

不是INACTIVE 多切几次归档

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.备库添加新的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.删除备库旧的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.



尝试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参数未初始化



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.