ORA-1613 signalled during: alter database enable public thread 2...

Enabling the thread 2 of a RAC 2 node database fails with the below error.

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#   Errors 
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Wed Feb 27 07:34:57 2013

ORA-1613 signalled during: alter database enable public thread 2...


ORA-1613 signalled during: alter database enable public thread 2...

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#   Command Used  
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Alter Database Enable Public Thread 2;

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#   Informations  
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There are no redo logs which belongs to Thread 2, all the redo logs are created in Thread 1.

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#  Solution 
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Added New Redo log groups to thread 2. 


alter database add logfile thread 2 group 7
('/u01/oradata/mydb/redo_02_07.log') size 1024M;

And then enabled the thread.

Alter Database Enable Public Thread 2;

Check Whether Thread is Enabled Or Not :

SQL> select thread#, enabled from v$thread;

   THREAD# ENABLED
---------- --------
         1 PUBLIC
         2 PUBLIC