To check the exact build version of an existing jConnect installation, execute this command from $JDBC_HOME/classes (UNIX) or %JDBC_HOME%\classes (Windows):
java -jar jconn3.jar
This command prints a version string such as:
jConnect (TM) for JDBC(TM)/6.05(Build 26564)/P/EBF16956/JDK14/Mon Jul 13 1:04:29 2009
Here, the version number is 6.05. The 5-digit number following the letters “EBF” indicates the exact jConnect version. This number increases as subsequent EBFs are released. Download and use the latest version.