Error in making backup of current controlfile, rman

Question

Hi All,
i am hitting by a strange error, i tried metalink and google but did't get any satisfactory answer yet, i would like to discuss it here...
we have an ORACLE 9iR2 two nodes RAC on solaris 9 SPARC, with a DR site dataguard 9i server...we also have a separate rman catalog server...initially everything was working fine but with the time the size of databases has been raised...now it has been observed that off n on we get following error when we take RMAN based backup:
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03015: error occurred in stored script exec_bkp_full
RMAN-03015: error occurred in stored script caf_db
RMAN-03002: failure of backup command at 01/21/2009 10:28:04
RMAN-06004: ORACLE error from recovery catalog database: ORA-03114: not connected to ORACLE
RMAN-06097: text of failing SQL statement: declare first boolean ; conf# number ; begin if ( :first > 0 ) then fi
RMAN-06099: error occurred in source file: krmk.pc, line: 27998
our backup script is:
printing stored script: backup_db
allocate channel canal01 type disk ;
sql 'alter database backup controlfile to trace';
sql 'alter system archive log current';
backup filesperset 4 format "path-to-directory/db_%U.bkp" ( database );
backup format "path-to-directory/stdby_%U.cf" current controlfile for standby keep forever nologs;
backup format "path-to-directory/arch_%U.bkp" archivelog all;
release channel canal01;
it has been noticed that when we remove "backup format "path-to-directory/stdby_%U.cf" current controlfile for standby keep forever nologs;" from backup script the backup runs without any problem...but when we have added this line, it gives above mentioned error.
PS: the same script runs fine with small size databases...we are getting such problem only with much huge size databases.
TIA

Answer 1

Hi,
Fareedh wrote:
1. But has this resolved your backup error?Yeah, amazingly this time Hot backup worked !
2. Try not to configure it, instead have the statement inside the run script.what is the difference in both types?
>
eg:-
run
allocate channel ch1 type Disk maxpiecesize=2500M;
backup
filesperset 50
format '<Your directory>'
database include current controlfile;
release channel ch1;