Symantec backup exec 2012 deduplication storage offline

Recently I've solve the problem of my SAN storage, but after the SAN storage issue solved, I found that the deduplication storage in backup exec 2012 was offline.

I tried to restart the PostgreSQL server 8.3 and backup exec deduplication engine services but failed.

I checked the eventlog and found this error mesage:

"Event ID: 0; Source: PostgresSQL

The description for Event ID 0 from source PostgreSQL cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

2013-01-31 17:57:50 GMT FATAL: could not create lock file "postmaster.pid": Invalid argument "

I follow the troubleshoot guide from this link

http://www.symantec.com/business/support/index?page=content&id=TECH205809

I've checked the permission for this volume for the BESA account was full control.

Then I follow this link:

http://www.symantec.com/business/support/index?page=content&id=TECH136974

But there isn't delete option when I right click on the postmaster.pid. I try highlight the postmaster.pid and press the delete button but files was not able to delete.

I reboot the backup server and tried the solution again but the result still the same.

My backup exec 2012 has the latest update.

Hope for symantec expert to help me out.