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Cisco Bug: CSCup43396 - tomcat threads exhausting due to some VM rest APIs

Last Modified

Jun 20, 2020

Products (1)

  • Cisco Unity Connection

Known Affected Releases


Description (partial)

Cisco Unity Connection Administration page is not accessible, also times out during authentication.

Thread dumps for tomcat suggested that, all it's threads are getting exhausted, as all of the threads are in busy state.

Use below Admin CLI command to monitor present tomcat thread state: 
show perf query class "Cisco Tomcat Connector"

Check for HTTPS Port(443) "ThreadsTotal" and "ThreadBusy" counter.
 - Perf class (Cisco Tomcat Connector) has instances and values:
    http-bio-443    -> Errors                         = 1
    http-bio-443    -> MBytesReceived                 = 0
    http-bio-443    -> MBytesSent                     = 0
    http-bio-443    -> Requests                       = 33
    http-bio-443    -> ThreadsBusy                    = 150
    http-bio-443    -> ThreadsMax                     = 150
    http-bio-443    -> ThreadsTotal                   = 150

If ThreadsBusy has value 150, then hitting this defect.
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