Unable to delete the Redolog of Thread 2 in RAC

Question

Hi,
Oracle 10gR2 ( 10.2.0.4), Rac Environment, Instance name orcl1, orcl2
Recently the orcl2 got crashed so we rebuilt the machine and orcl2 node and added the node again back to cluster
There was a failed attempt in DBCA (Addition instance part) where the redolog05 & 06 got created in ASM.
We created instance orcl02 as thread 3 instead of thread 2 and successfully added the node to cluster.
The redolog of thread 2 (redo05, redo06) created due to the failed DBCA add instance activity in unable to delete from the v$log entries.
GROUP# THREAD# MEMBER ARCHIVED STATUS Size (MB)
1 1 +ORCLDG3/orcl/redo01.log YES ACTIVE 50
2 1 +ORCLDG3/orcl/redo02.log NO CURRENT 50
5 2 +ORCLDG3/orcl/redo05.log YES UNUSED 50
6 2 +ORCLDG3/orcl/redo06.log NO CURRENT 50
8 3 +ORCLDG3/orcl/redo08.log NO CURRENT 50
9 3 +ORCLDG3/orcl/redo09.log YES INACTIVE 50
When i tried to disable the thread 2 i am getting the below errors, as the redo log 05, 06 are not physically present in the ASM
SQL> alter database disable thread 2;
alter database disable thread 2
ERROR at line 1:
ORA-00313: open failed for members of log group 6 of thread 2
ORA-00312: online log 6 thread 2: '+ORCLDG3/orcl/redo06.log'
ORA-17503: ksfdopn:2 Failed to open file +ORCLDG3/orcl/redo06.log
ORA-15173: entry 'redo06.log' does not exist in directory 'orcl'
Please help in removing the Thread 2 redo log files as this warning are getting written in the alert log every second and fills the mount point.
Regards

Answer 1

The method suggested in the thread is not working, please find the below errors,
SQL> alter database clear logfile group 5;
SQL> alter database clear logfile group 6;
alter database clear logfile group 6
ERROR at line 1:
ORA-00350: log 6 of instance orcl2 (thread 2) needs to be archived
ORA-00312: online log 6 thread 2: '+orclDG3/orcl/redo06.log'
SQL> alter database drop logfile group 5;
alter database drop logfile group 5
ERROR at line 1:
ORA-01567: dropping log 5 would leave less than 2 log files for instance orcl2 (thread 2)
ORA-00312: online log 5 thread 2: '+orclDG3/orcl/redo05.log'
SQL> alter database drop logfile group 6;
alter database drop logfile group 6
ERROR at line 1:
ORA-01623: log 6 is current log for instance orcl2 (thread 2) - cannot drop
ORA-00312: online log 6 thread 2: '+orclDG3/orcl/redo06.log'
SQL> alter database disable thread 2;
alter database disable thread 2
ERROR at line 1:
ORA-00313: open failed for members of log group 6 of thread 2
ORA-00312: online log 6 thread 2: '+orclDG3/orcl/redo06.log'
ORA-17503: ksfdopn:2 Failed to open file +orclDG3/orcl/redo06.log
ORA-15173: entry 'redo06.log' does not exist in directory 'orcl'
Any ideas,