Detecting the Informix DBMS version For best results, OpenLink components should be chosen to correspond to the Informix DBMS engine. Sometimes, these need not match, but please consult OpenLink Support 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).