The NetBackup 7.5.0.x master server appears to "freeze;" administration console hangs as some commands hang indefinitely.

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  • Article ID:000081413


The master server appears to "freeze." 

The condition described in this document can be seen when ALL of the following conditions have been met:

  • NetBackup Java/non-Java administration console hangs when selecting Storage Units, Lifecycle Policies, etc.
  • Command line execution of nbemmcmd and bpstulist commands (for example) hang indefinitely without reporting output
  • Restarting the NetBackup Enterprise Media Manager (nbemm) service does not help.
  • Sybase SQLAnywhere has NOT run out of cache per server.log


The root cause is multifaceted:

  • NetBackup nbdb database/query issue
  • NetBackup environment and/or configuration resulting in heavy load
  • Possibly underpowered/underprovisioned master server hardware



The formal resolution for this issue (ETrack 3124700) is included in the following release:

  • NetBackup 7.5 Maintenance Release 6 (

NetBackup is now available - please access the Related Article below for more information.

Please contact Symantec technical support, referencing this document and Etrack 3206707 to obtain an Emergency Engineering Binary (EEB) bundle containing a fix for this issue for NetBackup

Applies To

This issue affects NetBackup 7.5 through master servers.

Terms of use for this information are found in Legal Notices.



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