oracle dg坏境主库redolog改动大小

--备库standby

主库四个redolog 曾经都是50M大小

SQL>

alter database recover managed standby database cancel;

Database altered.

SQL> alter database add standby logfile group 11 ('+DATA/orcldg/onlinelog/standby_group_11.log') size 60M;

alter database add standby logfile group 12 ('+DATA/orcldg/onlinelog/standby_group_12.log') size 60M;

alter database add standby logfile group 13 ('+DATA/orcldg/onlinelog/standby_group_13.log') size 60M;

alter database add standby logfile group 14 ('+DATA/orcldg/onlinelog/standby_group_14.log') size 60M;

alter database add standby logfile group 15 ('+DATA/orcldg/onlinelog/standby_group_15.log') size 60M;

alter database add standby logfile group 16 ('+DATA/orcldg/onlinelog/standby_group_16.log') size 60M;

备库standby删除

alter database drop logfile group 5;

alter database drop logfile group 6;

alter database drop logfile group 7;

alter database drop logfile group 8;

alter database drop logfile group 9;

alter database drop logfile group 10;

主库redo加入

alter database add logfile thread 1 group 11 ('+DATA/orcl/onlinelog/group_11.log') size 60m;

alter database add logfile thread 1 group 12 ('+DATA/orcl/onlinelog/group_12.log') size 60m;

alter database add logfile thread 2 group 13 ('+DATA/orcl/onlinelog/group_13.log') size 60m;

alter database add logfile thread 2 group 14 ('+DATA/orcl/onlinelog/group_14.log') size 60m;

主库redo 删除

alter database drop logfile group 1;

alter database drop logfile group 2;

alter database drop logfile group 3;

alter database drop logfile group 4;

备库redo加入

刚開始删除的时候可能报错,运行下面命令:

alter system set standby_file_management='manual';

然后删除

alter database add logfile group 5 ('+DATA/orcldg/onlinelog/group_05.log') size 60m;

alter database add logfile group 6 ('+DATA/orcldg/onlinelog/group_06.log') size 60m;

alter database add logfile thread 2 group 7 ('+DATA/orcldg/onlinelog/group_07.log') size 60m;

alter database add logfile thread 2 group 8 ('+DATA/orcldg/onlinelog/group_08.log') size 60m;

alter database clear logfile '+DATA/orcldg/onlinelog/group_2.272.862167353'

备库redo删除

alter database drop logfile group 1;

alter database drop logfile group 2;

alter database drop logfile group 3;

alter database drop logfile group 4;

--这样的也是能够的

alter database add logfile member ('+DATA/orcldg/onlinelog/group_2.273.862167353') size 60M reuse;

create spfile from pfile='$ORACLE_HOME/dbs/pfile_for_standby.txt'

假设遇到错误能够查看 log_file_name_convert 与 db_file_name_convert 是否有问题

alter system set log_file_name_convert='+DATA/orcl/onlinelog, +DATA/orcldg/onlinelog' scope=spfile;

alter system set db_file_name_convert='+DATA/orcl/datafile, +DATA/orcldg/datafile' scope=spfile;

--主库standby 删除

alter database drop logfile group 5;

alter database drop logfile group 6;

alter database drop logfile group 7;

alter database drop logfile group 8;

alter database drop logfile group 9;

alter database drop logfile group 10;

主库standby 加入

alter database add standby logfile group 5 ('+DATA/orcl/onlinelog/standby_group_05.log') size 60M reuse;

alter database add standby logfile group 6 ('+DATA/orcl/onlinelog/standby_group_06.log') size 60M reuse;

alter database add standby logfile group 7 ('+DATA/orcl/onlinelog/standby_group_07.log') size 60M reuse;

alter database add standby logfile group 8 ('+DATA/orcl/onlinelog/standby_group_08.log') size 60M reuse;

alter database add standby logfile group 9 ('+DATA/orcl/onlinelog/standby_group_9.log') size 60M reuse;

alter database add standby logfile group 10 ('+DATA/orcl/onlinelog/standby_group_10.log') size 60M reuse;

然后在备库运行

alter database recover managed standby database using current logfile disconnect;

alter system set standby_file_management='auto';