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oracle 11gR2 逻辑备用数据库搭建

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Release: 2016-06-07 16:19:58
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oracle 11.2.0.1逻辑备用库环境搭建 首先创建物理备用库,创建物理备用库后,最好创建各自的spfile 物理备库上 停止redo应用 alter database recover managed STANDBY database cancel; 主库上生成logminer 会发生几次切换日志 报错忽略 execute dbms_logstd

  oracle 11.2.0.1逻辑备用库环境搭建

  首先创建物理备用库,,创建物理备用库后,最好创建各自的spfile

  物理备库上 停止redo应用

  alter database recover managed STANDBY database cancel;

  主库上生成logminer 会发生几次切换日志 报错忽略

  execute dbms_logstdby.build;

  物理备库上 转化为逻辑备用库

  alter database recover to logical standby orcl;

  shutdown immediate

  startup mount

  SELECT db_unique_name,open_mode, database_role,switchover_status,guard_status,protection_mode FROM V$DATABASE;

  备库上 重建逻辑standby的密码文件

  orapwd file=$ORACLE_HOME/dbs/orapwstby password=oracle entries=5 ignorecase=y force=y

  备库上 修改参数

  alter system set log_archive_dest_1='location=/u01/oradata/arch/stby valid_for=(online_logfiles,all_roles) db_unique_name=stby';

  alter system set log_archive_dest_2='location=/u01/oradata/arch valid_for=(standby_logfiles,standby_roles) db_unique_name=stby';

  备库上 创建备用日志

  alter database add standby logfile group 4 ('/u01/oradata/stby/standbylj01.log') size 20M reuse;

  alter database add standby logfile group 5 ('/u01/oradata/stby/standbylj02.log') size 20M reuse;

  alter database add standby logfile group 6 ('/u01/oradata/stby/standbylj03.log') size 20M reuse;

  select member from v$logfile;

  备库上 打开逻辑standby

  alter database open resetlogs;

  alter database start logical standby apply immediate;

  备库上 检查

  select instance_name,status from v$instance;

  SELECT db_unique_name,open_mode, database_role,switchover_status,guard_status,protection_mode FROM V$DATABASE;

  select group#,sequence#,used,status from v$standby_log;

  测试

  在主库上 创建

  create table scott.t4 (id int);

  insert into scott.t4 values(4);

  commit;

  alter system switch logfile;

  过一会儿 在逻辑备用库上查询

  select * from scott.t4;

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