JDBC Developer's Guide - Supra - Cincom

Automatic custom mappingWhen you enable automatic custom mapping for ordbObject and/orordbCollection, then all object references that have a custom map defined willgenerate new instances of the custom mapped class.Care should be taken when enabling automatic custom mapping for largecollections of objects, and objects that contain many object references.Connection poolingDatabase connects and disconnects are time-consuming. If your applicationneeds to frequently connect and disconnect from the Cincom ORDB databaseusing the same username and password, you should consider using connectionpooling.The Cincom ORDB JDBC driver can maintain a pool of database connectionsthat are available for new connection requests.When connection pooling is enabled, the Connection.close() method willperform the following steps:1. A rollback will be issued on the database connection.2. All database resources (resultSets, Statements, etc) for the connection willbe released.3. The connection will be added to a pool of available connections.When connection pooling is enabled, the Driver.connect() method will checkthe available connections that matches the database, user, password, andlanguage being requested. If a match is found, then the existing connectionwill be used. If not found, then a new database connection will be established.A daemon process is utilized to perform database disconnects on unusedconnection in the available pool. This will take place on a timer controlled bythe application.Two static methods of ordbDriver are used to control connection pooling.These methods are:♦♦setConnectPoolTimeout(long milliseconds)long getConnectPoolTimeout()JDBC Developer's Guide, P25-9504-03 Page 89Chapter: 6. Coding tips and troubleshootingSection: Performance optimization