Change the default time-out appropriately, based on how long it took to shut down the Oracle database .Contact Oracle database administrator to check the time database takes to shut down. If the time-out is too short, then restore jobs and offline backups may fail with a time-out error. If the time-out is too long, and the database does not respond to the state change request, the job takes longer to fail. 

The following table describes how to change the SQLplus time-out.

For Oracle on Windows

• Open Regedit
  
  Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes.
  
• Go to HKLM\ SOFTWARE\Symantec\Backup Exec\Engine\Agents\XBSA\Oracle RMAN Agent\SqlplusTimeout
• Create a new DWORD value Sqlplus Timeout
• Set the value as 300 seconds (this is equal to 5 minutes)
   

For Oracle on Linux

• Open a Terminal Window
• Type the following command vi etc/VRTSralus/ralus.cfg
• Create the following entry Software\Symantec\Backup Exec\Engine\Agents\XBSA\Oracle RMAN Agent\SqlplusTimeout
• Set the value as 300 (this is equal to 5 minutes)