oracle rac环境中怎么开启归档,相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。

oracle rac 归档设置需要不像单实例设置简单,开启过程需要注意一些细节

归档开启思路:

1:查看数据库是否开启归档

2:创建共享目录(归档一定要放在共享存储上)

3:将rac设置成单实例模式

4:分别关闭各个节点实例

5:将其中一个节点启动到mount状态,开启归档,设置归档路径,格式,并打开数据库还原rac模式

6: 打开所有节点数据库

7:查看数据库归档参数设置是否生效

8:切换归档,查看归档是否正常工作

1、查询归档当前信息

SQL>showparameterrecoveryNAMETYPEVALUE-----------------------------------------------------------------------------db_recovery_file_deststringdb_recovery_file_dest_sizebiginteger0recovery_parallelisminteger0

2、查询是否开户归档日志

SQL>archiveloglistDatabaselogmodeArchiveModeAutomaticarchivalEnabledArchivedestination/oracle/app/oracle/product/11.2.0/db_1/dbs/archOldestonlinelogsequence35Nextlogsequencetoarchive36Currentlogsequence36

说明:从当前查询是已开始归档模式了,但是规定路径不对要重新修改

3、查询集群参数

SQL>showparameterclusterNAMETYPEVALUE-----------------------------------------------------------------------------cluster_databasebooleanTRUEcluster_database_instancesinteger2cluster_interconnectsstring

4、关闭另外一个节点数据库


SQL>shutdownimmediateDatabaseclosed.Databasedismounted.ORACLEinstanceshutdown.

5、在当前正常节点修改集群为单节点模式

SQL>altersystemsetcluster_database=falsescope=spfile;Systemaltered.

6、配置闪回大小

SQL>altersystemsetdb_recovery_file_dest_size=2Gscope=both;Systemaltered.

7、配置归档日志路径,配置在DG中

SQL>altersystemsetdb_recovery_file_dest='+DGRECOVERY'scope=both;Systemaltered.

8、关闭当前节点数据库

SQL>shutdownimmediateDatabaseclosed.Databasedismounted.ORACLEinstanceshutdown.

9.把当前节点数据库启动到mount状态中修改归档

SQL>startupmountORACLEinstancestarted.TotalSystemGlobalArea784998400bytesFixedSize2257352bytesVariableSize331353656bytesDatabaseBuffers448790528bytesRedoBuffers2596864bytesDatabasemounted.

10.查询当前数据库是处于什么状态

SQL>selectstatusfromv$instance2;STATUS------------MOUNTED

11.修改数据库归档

SQL>alterdatabasearchivelog;Databasealtered.

12.恢复数据库双节点实例

SQL>altersystemsetcluster_database=truescope=spfile;Systemaltered.

13.打开数据库

SQL>alterdatabaseopen;Databasealtered.

14.查询当前数据库状态

SQL>selectstatusfromv$instance;STATUS------------OPEN

15、查询数据库集群状态

SQL>showparameterclusterNAMETYPEVALUE-----------------------------------------------------------------------------cluster_databasebooleanTRUEcluster_database_instancesinteger2cluster_interconnectsstring

16、再启动另外一个节点

startup

17、切换归档日志,判断是否切换成功

SQL>altersystemswitchlogfile;Systemaltered.

18、查询归档中数据

ASMCMD>pwd+DGRECOVERY/RAC/ARCHIVELOG/2017_06_13ASMCMD>lsthread_1_seq_37.256.946542069thread_1_seq_38.257.946542129thread_1_seq_39.258.946542133thread_1_seq_40.260.946542135thread_1_seq_41.261.946543367thread_1_seq_42.262.946543369thread_1_seq_43.264.946543373thread_1_seq_44.265.946543375thread_1_seq_45.266.946543377thread_1_seq_46.267.946543377thread_1_seq_47.269.946544929thread_2_seq_4.259.946542029thread_2_seq_5.263.946543265thread_2_seq_6.268.946543277

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