%META:TOPICPARENT{name="ConfigTroubleshootINF"}%
==Detecting the Informix DBMS version==

For best results, <nop>OpenLink components should be chosen to correspond to the Informix DBMS engine.  Sometimes, these need not match, but please <a href="http://support.openlinksw.com/support/online-support.vsp">consult <nop>OpenLink Support</a> about your specific scenario.

* To learn the Informix DBMS engine version, ensure the Informix environment variables are set, and run **{{{$INFORMIXDIR/bin/onstat -V}}}** on Unix, or **{{{onstat -V}}}** from a DOS prompt on Windows.
{{{
bash-2.05b$ ./onstat -V
Informix Dynamic Server Version 7.31.UC2	Software Serial Number AAD#J249082
}}}
* To learn the "esql" client library version, ensure the Informix environment variables are set, and run **{{{$INFORMIXDIR/bin/esql -V}}}** on Unix, or **{{{esql -V}}}** from a DOS prompt on Windows.
{{{
bash-2.05b$ ./esql -V
IBM Informix CSDK Version 2.81, IBM Informix-ESQL Version 9.53.HC3
Software Serial Number RDS#N000000
}}}
Windows users may also find this information in the "About Setnet32" tab of the Informix **Setnet** utility (**Start** menu >> **Programs** >> **INFORMIX-Connect** or **INFORMIX-Client SDK**).