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UCMDB Data Flow Probe reduces disk space

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Occasional Advisor

UCMDB Data Flow Probe reduces disk space

[ Edited ]


Sorry fo my English, i am use Google Translate.

After installing "DataFlowProbe" the server began to decrease disk space. Learned by observation that there is a constant increase in the folder "DataFlowProbe". Help to understand why this happens.

And another question, whether the protocol "SNMP" using "UCMDB" to collect information about SAN Switches and build CI Type? That can be read on this subject?


DataFloweProbe 10.01.


HPE Expert

Re: UCMDB Data Flow Probe reduces disk space

There are two reasons for growing of the disc space on the probe side:

  1. 1. Your UCMDB server doesn't receive discovered CIs. Probe has a queue of CIs not sent to UCMDB and those CIs took place on the probe DB. To check this connect to the probe JMX at http://probe_server:1977. Then go to GwTaskResultDistributer and check NumberOfUnsentResults. In most cases it should be 0 short time after discovery.
  2. You have Out Of Memory situation and probe generating memory dumps. TO check this go to C:\hp\UCMDB\DataFlowProbe\bin on the probe file system and look for .hprof files. If the OOM is your problem, you can try to raise probe JVM HEAP Memory to 1400. TO do so change following parameters in C:\hp\UCMDB\DataFlowProbe\bin\WrapperEnv.conf file. If you are on UCMDB 10 you can use bigger values:



Hope this helps.


-Dmitry Gomel, PMP
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Regular Advisor

Re: UCMDB Data Flow Probe reduces disk space

[ Edited ]

Dear Dima,

I have the same issue and my C drive was 128GB and now is 0kb. The my settings are:



Can you help me clarifying the first solution you provided. My .../bin directory is full of .mdmp files of 3 to 4 GB.



Re: UCMDB Data Flow Probe reduces disk space

//Add this to "OnDomLoad" event