1.開啟歸檔日志失敗

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SQL> alter database archivelog;

alter database archivelog

*

ERROR at line 1:

ORA-00265: instance recovery required, cannot set ARCHIVELOG mode??? --上欠數據庫意外中止才會出現這種情況,千萬不要用shutdown abort終止數據庫

解決方法:

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SQL> shutdown immediate???? --停止數據庫

ORA-01109: database not open

Database dismounted.

ORACLE instance shut down.

SQL> startup???? --打開數據庫

ORACLE instance started.

Total System Global Area? 661209088 bytes

Fixed Size????????? 1338560 bytes

Variable Size???????? 486540096 bytes

Database Buffers????? 167772160 bytes

Redo Buffers??????????? 5558272 bytes

Database mounted.

Database opened.

SQL> shutdown immediate??? --正常停止數據庫

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup mount??? --數據庫啟動到掛載狀態

ORACLE instance started.

Total System Global Area? 661209088 bytes

Fixed Size????????? 1338560 bytes

Variable Size???????? 486540096 bytes

Database Buffers????? 167772160 bytes

Redo Buffers??????????? 5558272 bytes

Database mounted.

SQL> alter database archivelog;??? --修改成功

Database altered.

SQL>

測試:

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SQL> select log_mode from v$database;??? --查看數據庫是否為歸檔模式

LOG_MODE

------------

ARCHIVELOG

SQL>

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