Hi,
If it's one instance of OPS or RAC ,you should set parallel_server=no or cluster_database=false,then 'startup mount' ,'alter database archivelog;',and you can change them back once archive log working.


Zhai


[EMAIL PROTECTED] wrote:


Hi List,

Could someone help me to figure out what is going on here?
I am trying to change db from NOARCHIVELOG --> ARCHIVELOG.


SQL> archive log list Database log mode No Archive Mode Automatic archival Enabled Archive destination /u02/arch Oldest online log sequence 966 Current log sequence 968

SQL> shutdown
Database closed.
Database dismounted.
ORACLE instance shut down.

SQL> startup mount
ORACLE instance started.

Total System Global Area 1409298592 bytes
Fixed Size                    73888 bytes
Variable Size             374722560 bytes
Database Buffers         1024000000 bytes
Redo Buffers               10502144 bytes
Database mounted.


SQL> alter database archivelog; alter database archivelog * ERROR at line 1: ORA-01126: database must be mounted EXCLUSIVE and not open for this operation

Thanks
Sami







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