Backup are failing with 11 error(System Call failed)

Hi All,

From last few days I am observing that the backups are failing for some policies with errro code 11 at one specific time. But after some time when I restart the backup. They are getting successfully completed.

Please find error:

06/19/2014 19:20:27 - Error bptm (pid=24055) system call failed - Resource temporarily unavailable (at tmmpx.c.1507)

Netbackup Master server version 6.5 OS - Solaris.

Please help to resolve this issue. I found there are so many reasons for error code 11 failure. but not able to decide exact resolution.

Thank You.