centos7 oracle 开启redolog方法

环境准备

centos版本：centos 7

oracle版本：oracle 12c

1.管理员身份连接数据库

[code]sqlplus sys/sys@oratest as sysdba

2.查看当前归档模式，是归档还是非归档

[code]SQL> archive log list;Database log mode              No Archive ModeAutomatic archival             DisabledArchive destination            USE_DB_RECOVERY_FILE_DESTOldest online log sequence     228Current log sequence           230

3.关闭数据库

[code]SQL> shutdown immediate;Database closed.Database dismounted.ORACLE instance shut down.

4.启动数据库到mount状态

[code]SQL> startup mount;ORACLE instance started.Total System Global Area 3423965184 bytesFixed Size                  2180544 bytesVariable Size            2013268544 bytesDatabase Buffers         1392508928 bytesRedo Buffers               16007168 bytesDatabase mounted.

5.启动归档模式

[code]SQL> alter database archivelog;Database altered.SQL> archive log list;Database log mode              Archive ModeAutomatic archival             EnabledArchive destination            USE_DB_RECOVERY_FILE_DESTOldest online log sequence     228Next log sequence to archive   230Current log sequence           230

6.启动数据库

[code]SQL> alter database open;Database altered.

7.关闭归档模式

[code]SQL> shutdown immediate;Database closed.Database dismounted.ORACLE instance shut down.SQL> startup mount;ORACLE instance started.Total System Global Area 3423965184 bytesFixed Size                  2180544 bytesVariable Size            2013268544 bytesDatabase Buffers         1392508928 bytesRedo Buffers               16007168 bytesDatabase mounted.SQL> alter database noarchivelog;Database altered.SQL> archive log list;Database log mode              No Archive ModeAutomatic archival             DisabledArchive destination            USE_DB_RECOVERY_FILE_DESTOldest online log sequence     228Current log sequence           230SQL>

8.开启附加日志

[code]alter database add supplemental log data;