Cannot get information on file '/var/opt/omni/tmp/rcvcat.exp' Error: 2

[Major] From: OB2BAR_DMA@dbsrv01.in.com "DB001"  Time: 2/23/2014 3:05:36 PM
      Cannot get information on file '/var/opt/omni/tmp/rcvcat.exp' Error: 2.

[Major] From: ob2rman@dbsrv01.in.com "DB001"  Time: 02/23/2014 03:05:44 PM
      Backup of recovery catalog failed.

Solution:

>> You would receive this error in linux OS and clustered Oracle DB. The patch DPLNX_00094 would fix this.

Alternatively, you can try the below steps:

>> From the Integration specific option, Enable the option 'Disable recovery catalog auto backup'. This would skip the backup of recovery catalog backup from DP. Rerun the backup now. If you still see the same errors and wonder why, then move on to the next step.

>> The backup script in barlists always takes precedence from the DP GUI options. Open the spec in VI editor and Move to the end of the barlist and edit the script with value "-skip RCVCAT".

Example:
CLIENT "DB001" dbsrv01.in.com
{
        -exec ob2rman.exe
        -args {
                "-skip RCVCAT"                                             //Skips the recovery catalog backup
                "-pre  /home/user/DB001_weekly_full.rman"     //Pre exec scripts if any
                "-backup"                
        }
        -input {
                "run {"
                "allocate channel 'dev_0' type 'sbt_tape'"        //channel allocation
                " parms 'ENV=(OB2BARTYPE=Oracle8,OB2APPNAME=DB001,OB2BARLIST=dbsrv01_DB001_ONLINE)';"
                "backup"
                " format 'dbsrv01_DB001_ONLINE<DB001_%s:%t:%p>.dbf'"
                " current controlfile;"
                "}"
        }
        -profile
}  -protect days 28                                                      //data protection in days