Start the NetBackup Administration Console.  (see relevant doc)

In the menu tree on the left-hand side of the NetBackup Administration
Console, the Activity Monitor will appear, with the Jobs tab showing.
The following information is provided:

Job ID: Identifier that NetBackup assigns to each job
Type: Backup, Archive, or Restore
State: Queued - Jobs that are in the NetBackup scheduler queue
  Active - Currently active jobs
  Re-Queued - Jobs that are back in the NetBackup scheduler queue 
    because the previous attempt was unsuccessful
  Done - Completed jobs (whether successful or not)
Status: The status code of the job (consult this status code when 
  troubleshooting)
Policy: The backup policy for this job
Schedule: The schedule for this job
Client: The client computer for this job
Media Server: The media server for this job (polaris)
Start Time: The start time for this job
Elapsed Time: The elapsed time for this job
End Time: The end time for this job
Storage Unit: Which tape drive is being used for this job
Attempt: The current attempt number for this job
Operation: For active jobs, indicates the current operation (mounting,
  writing, etc.)
Kilobytes: The number of kilobytes that have been written
Files: The number of files that have been written

A Status Code of 0 means a successfully completed job with no errors.

A Status Code of 1 means that some files were not backed up, but the 
backup process continued and completed.  Typically this is not a 
problem, as this typically means that a system file was in use when
the backup was occurring, but do check the list of files that were not 
backed up to confirm this.  To get the list of files, run a report on
Status of Backups during the appopriate time period (see Reports).

On any other status code, the backup did not complete successfully.
Consult the VERITAS NetBackup 4.5 Troubleshooting Guide, Chapter 4 -
NetBackup Status Codes and Messages to find the type of error and the
recommended course of action.

(remember to include how to cancel jobs via the Activity Monitor)