OnComman Unified Manager 9.5P1 cannot open connection

Chelydridae — Wed, 04 Jun 2025 10:56:42 GMT

One month ago we migrated OCUM Vmware appliance to OCUM on CentOS. Everything was working fine, but now - back from some days off - when opening the OCUM website I receive this error after loging in:

==MESSAGE==
Cannot open connection

==DETAILS==
No details are available.

==CORRECTIVE ACTION==
No suggested corrective action is available.

==LOCATION==
Location is not specified.

==BROWSER INFO==
App Name: Netscape
App Version: 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36
App Codename: Mozilla
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36
Platform: Win32
Cookie Enabled: true
=========

Immediately after confirming this message, the next one pops up:

==TIME==
2020-08-19 15:24:22,083

==MESSAGE==
StatementCallback; SQL [SELECT count(distinct source_id) FROM ocum.event, ocum.eventtypevalue v WHERE impactArea='PERFORMANCE' AND state in ('NEW', 'ACKNOWLEDGED') AND v.impactLevel=2 AND source_resourcetype='cluster' AND v.id=event.value_id AND iscontinuous=1]; (conn=5) unexpected end of stream, read 0 bytes from 4 (socket was closed by server); nested exception is java.sql.SQLNonTransientConnectionException: (conn=5) unexpected end of stream, read 0 bytes from 4 (socket was closed by server)

==DETAILS==
No details are available.

==CORRECTIVE ACTION==
No suggested corrective action is available.

==LOCATION==
Location is not specified.

==BROWSER INFO==
App Name: Netscape
App Version: 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36
App Codename: Mozilla
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36
Platform: Win32
Cookie Enabled: true

===================

What could be broken here?

Any suggestion where to look further is welcome.

Thanks to all

Re: OnComman Unified Manager 9.5P1 cannot open connection

helge — Fri, 21 Aug 2020 12:43:26 GMT

This could happen if the database is not running properly or not at all.

Did you reboot already?

Did you check the services?

systemctl status mysql

systemctl status ocie

There is also the acquisition service ocieau which is not relevant for this.

topic OnComman Unified Manager 9.5P1 cannot open connection in Active IQ Unified Manager Discussions

OnComman Unified Manager 9.5P1 cannot open connection

Re: OnComman Unified Manager 9.5P1 cannot open connection