I am getting below error while taking RMAN backup.

Question

Friends,
I am getting below error while taking RMAN backup.
The issue is related with a lock while trying to backup the controlfile.
The lock is more likely caused by the autobackup controlfile process started just before RMAN process was also trying the backup controlfile as shown in the following alert.log excerpt.
Starting Control File and SPFILE Autobackup at 2009-04-07 09:24:58
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of Control File and SPFILE Autobackup command on ORA_DISK_1 channel at 04/07/2009 09:25:03
ORA-00230: operation disallowed: snapshot control file enqueue unavailable
Is there anyway to solve this issue?Thanks in advance.

Answer 1

Hi,
SQL> SELECT s.sid, username AS "User", program, module, action, logon_time "Logon", l.*
FROM v$session s, v$enqueue_lock l
WHERE l.sid = s.sid and l.type = 'CF' AND l.id1 = 0 and l.id2 = 2; 2 3
no rows selected
Oracle version : 10.2.0.3
I am getting this error once in a month not everyday.
Starting Control File and SPFILE Autobackup at 2009-04-07 09:24:58
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of Control File and SPFILE Autobackup command on ORA_DISK_1 channel at 04/07/2009 09:25:03
ORA-00230: operation disallowed: snapshot control file enqueue unavailable
Please suggest me based on this..Thanks in advance..