Forum Discussion

Arun_K's avatar
Arun_K
Level 6
13 years ago

avoid 196

How can i avoid 196 in my environment where there are around 2000 servers to backup.

 

Any specific settings?

7.1.x and Earlier
Backup and Recovery
NetBackup
  • Marianne's avatar
    Marianne
    13 years ago

    You need to monitor backups during backup window to see why jobs are queued.

    If you give us a reason for queued jobs (copy all text in Details tab and post here), we can provide better assistance.

    While jobs are queued, you need to see how many jobs are active at that point in time, how many drives are in use (if using tape drives).
    For jobs to Data Domain, see how many jobs are active for each media server. Check 'Maximum Concurrent Jobs' in STU config, confirm Multiplexing is enabled in ALL schedules, check 'Max Jobs per Client' in master server Host Properties. Ensure this value is not the default of 1. A value of 4 is a good average.

    Check that your timeouts on all media servers are not too high - Excessive Client Read and Client Connect Timeouts will cause jobs to remain in Active state for way too long, holding on to resources while no data is backed up.
    The default for both values is 5 minutes. The only time where this should be increased is for database backups. 30 minutes (1800) should be the limit.

    Possible reasons for status 196 (excessive timeouts):
    https://www-secure.symantec.com/connect/forums/client-read-timeout-and-client-connect-timeout-can-go-masters-or-medias-they-go-anything-will#comment-7120441

    https://www-secure.symantec.com/connect/forums/details-media-server-and-clients

  • Nicolai's avatar
    Nicolai
    Moderator
    13 years ago

    Status 196 is a capacity issue. You are loading more backup than the system can handle in the backup window defined. Review backup windows to see if they are acceptable for you're environment.

    See Symantec recommendation: http://www.symantec.com/docs/HOWTO35070

     

  • Arun_K's avatar
    Arun_K
    Level 6
    13 years ago

    I mean i want to know whatall setting i can see for this.

    For eg:max jobs per policy settings, etc etc

  • Marianne's avatar
    Marianne
    Level 6
    13 years ago

    You need to monitor backups during backup window to see why jobs are queued.

    If you give us a reason for queued jobs (copy all text in Details tab and post here), we can provide better assistance.

    While jobs are queued, you need to see how many jobs are active at that point in time, how many drives are in use (if using tape drives).
    For jobs to Data Domain, see how many jobs are active for each media server. Check 'Maximum Concurrent Jobs' in STU config, confirm Multiplexing is enabled in ALL schedules, check 'Max Jobs per Client' in master server Host Properties. Ensure this value is not the default of 1. A value of 4 is a good average.

    Check that your timeouts on all media servers are not too high - Excessive Client Read and Client Connect Timeouts will cause jobs to remain in Active state for way too long, holding on to resources while no data is backed up.
    The default for both values is 5 minutes. The only time where this should be increased is for database backups. 30 minutes (1800) should be the limit.

    Possible reasons for status 196 (excessive timeouts):
    https://www-secure.symantec.com/connect/forums/client-read-timeout-and-client-connect-timeout-can-go-masters-or-medias-they-go-anything-will#comment-7120441

    https://www-secure.symantec.com/connect/forums/details-media-server-and-clients

  • mph999's avatar
    mph999
    Level 6
    13 years ago

     

    Further to Nicolais answer, where the issue is caused by capactity of the system issues ...

    Very very simple - design your systems properly in the first place, so it is correctly designed to handle the amount of backups it needs to do, taking into account future growth and new clients that will be added (capacity planning).

    Trying to fix 196, once they start to happen, can be very difficult, if not impossible. - if the cause is 'capacity'.

    Martin

  • Yogesh_Jadhav1's avatar
    Yogesh_Jadhav1
    Level 5
    13 years ago

    Enough resource and accurate configuration & correct Backup Window depending upon number of jobs are key to avoid 196.

    A short work-around to stop the 196 error just before the backup window closes and where you do not have oter option ; particularly for file system job set the checkpoint for policy and suspend the queued jobs just 5 minutes before the backup window close. You can resume it later & they should complete, make sure you are not affecting your production environment by spilling jobs in production hours.