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Scalability Engine crashes Unable to Retrieve Database Properties on Oracle MDB


Article ID: 15500


Updated On:


CA Automation Suite for Data Centers - Configuration Automation CA Client Automation - Asset Management CA Client Automation - IT Client Manager CA Client Automation CA Client Automation - Remote Control CA Client Automation - Asset Intelligence CA Client Automation - Desktop Migration Manager CA Client Automation - Patch Manager


Collect Engine may fail with 

Unable to Retrieve Database Properties from Manager: <name of Domain Manager>. COAPI Returned:25

After a restart of the engine, it may work for a while but fail again later on.

You will find some ORA-12516 msgs in the logs.

This msg appears:
ORA-12516: TNS:listener could not find available handler with matching protocol stack 

How to increase the stack handler value


Win2008R2 with Oracle on same system.DSM Version: 14.1But it may happen on other flavours of Oracle and ITCM also


You need to increase the stack handler value for Oracle.

Refer to