If you run a Java stored procedure by using a Type 2 or 4 JDBC driver, it is important that you check the settings described in 18.12 Migration from a Type2 JDBC driver. If a driver name, a protocol name that is set in the URL when HiRDB is connected, a sub-protocol name, and a sub-name are specified in a Java stored procedure, whether a Type2 JDBC driver or a Type4 JDBC driver is used is determined on the basis of specified information.