Not able to add new log file to the 11g database.

Question

Hi DBA's
I am not able to add the log file i am getting error while adding the database.
SQL> alter database add logfile group 3 ('/oracle/DEV/db/apps_st/data/log03a.dbf','/oracle/DEV/db/apps_st/data/log03a.dbf') size 50m reuse;
alter database add logfile group 3 ('/oracle/DEV/db/apps_st/data/log03a.dbf','/oracle/DEV/db/apps_st/data/log03a.dbf') size 50m reuse
ERROR at line 1:
ORA-01505: error in adding log files
ORA-01577: cannot add log file '/oracle/DEV/db/apps_st/data/log03a.dbf' - file
already part of database
SQL> select a.group#, member, a.status from v$log a, v$logfile b where a.group# = b.group# order by 1;
GROUP# MEMBER STATUS
1 /oracle/DEV/db/apps_st/data/log01a.dbf ACTIVE
1 /oracle/DEV/db/apps_st/data/log01b.dbf ACTIVE
2 /oracle/DEV/db/apps_st/data/log02a.dbf CURRENT
2 /oracle/DEV/db/apps_st/data/log02b.dbf CURRENT
Kindly help me to add the new log file to my database.
Thanks,
SG

Answer 1

Hi Sawwan,
V$LOGMEMBER was written in the document,
I query the log members as bellow
1)select a.group#, member, a.status from v$log a, v$logfile b where a.group# = b.group# order by 1;
GROUP# MEMBER STATUS
1 /oracle/DEV/db/apps_st/data/log01a.dbf INACTIVE
1 /oracle/DEV/db/apps_st/data/log01b.dbf INACTIVE
2 /oracle/DEV/db/apps_st/data/log02a.dbf CURRENT
2 /oracle/DEV/db/apps_st/data/log02b.dbf CURRENT
2)SQL> select group#,member,status from v$logfile;
GROUP# MEMBER STATUS
2 /oracle/DEV/db/apps_st/data/log02a.dbf
2 /oracle/DEV/db/apps_st/data/log02b.dbf
1 /oracle/DEV/db/apps_st/data/log01a.dbf
1 /oracle/DEV/db/apps_st/data/log01b.dbf
But i am littile bit confused that there is no group or datafile called " Group 3 and log03a.dbf" as per the above query, how can i drop tease group and datafile.
and i crossverified in the data top the files are exist or not but those are not existing. but still i am getting the same error that i can't create that already exist.
can issue the bellow queris to drop those group which i dont think so it will exist?
SQL>alter database drop logfile group 3;
Thanks in advance.
Regards,
SG