Getting error when starting WAS LP server ClassNotFoundException: com.ibm.db2.jcc.DB2Driver - jdbc

Question

I am getting below error in Eclipse console when i try to start the web sphere LP server (WP 7).
[2017-10-06 12:04:46,952] [ERROR] com.ibatis.common.logging.jakarta.JakartaCommonsLoggingImpl.error [19] SimpleDataSource: Error while loading properties. Cause: java.lang.ClassNotFoundException: com.ibm.db2.jcc.DB2Driver
java.lang.ClassNotFoundException: com.ibm.db2.jcc.DB2Driver
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:278)
at com.ibatis.common.resources.Resources.classForName(Resources.java:267)
at com.ibatis.common.resources.Resources.instantiate(Resources.java:283)
at com.ibatis.common.jdbc.SimpleDataSource.initialize(SimpleDataSource.java:199)
at com.ibatis.common.jdbc.SimpleDataSource.<init>(SimpleDataSource.java:116)
at com.ibatis.sqlmap.engine.datasource.SimpleDataSourceFactory.initialize(SimpleDataSourceFactory.java:31)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser$9.process(SqlMapConfigParser.java:220)
at com.ibatis.common.xml.NodeletParser.processNodelet(NodeletParser.java:121)
at com.ibatis.common.xml.NodeletParser.process(NodeletParser.java:105)
at com.ibatis.common.xml.NodeletParser.process(NodeletParser.java:102)
at com.ibatis.common.xml.NodeletParser.process(NodeletParser.java:102)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:72)
at com.ibatis.common.xml.NodeletParser.parse(NodeletParser.java:51)
at com.ibatis.sqlmap.engine.builder.xml.SqlMapConfigParser.parse(SqlMapConfigParser.java:46)
at com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(SqlMapClientBuilder.java:63)
at com.pm.testdatamgt.persistence.util.SqlMapBuilder.build(SqlMapBuilder.java:67)
at com.pm.testdatamgt.persistence.util.SqlMapConfig.<clinit>(SqlMapConfig.java:71)
at com.pm.testdatamgt.persistence.util.SqlMapConfigFactory.getSqlMapInstance(SqlMapConfigFactory.java:37)
at com.pm.persistence.dao.impl.ReferenceCodeDaoImpl.getRefCatIdForSname(ReferenceCodeDaoImpl.java:95)
at com.pm..service.impl.ReferenceCodeServiceImpl.initAttributeNames(ReferenceCodeServiceImpl.java:99)
at com.pm.testdatamgt.startup.StartupServlet.loadVariables(StartupServlet.java:139)
at com.pm.testdatamgt.startup.StartupServlet.init(StartupServlet.java:125)
at javax.servlet.GenericServlet.init(GenericServlet.java:244)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:332)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadOnStartupCheck(ServletWrapper.java:1428)
at com.ibm.ws.webcontainer.webapp.WebApp.doLoadOnStartupActions(WebApp.java:1205)
at com.ibm.ws.webcontainer.webapp.WebApp.commonInitializationFinally(WebApp.java:1173)
at com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:1075)
at com.ibm.ws.webcontainer.webapp.WebApp.initialize(WebApp.java:6595)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebApp(DynamicVirtualHost.java:468)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost.startWebApplication(DynamicVirtualHost.java:463)
at com.ibm.ws.webcontainer.osgi.WebContainer.startWebApplication(WebContainer.java:1120)
at com.ibm.ws.webcontainer.osgi.WebContainer.access$000(WebContainer.java:104)
at com.ibm.ws.webcontainer.osgi.WebContainer$2.run(WebContainer.java:932)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:522)
at java.util.concurrent.FutureTask.run(FutureTask.java:277)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1153)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.lang.Thread.run(Thread.java:785)
I have added the required datasource in my server.xml
**<library id="DB2JCCLib">
<fileset dir="${server.config.dir}/resources/DB2" includes="db2jcc.jar, db2jcc_license_cisuz.jar, db2jcc_license_cu.jar"/>
</library>
dataSource id="db2" jndiName="jdbc/db2">
<jdbcDriver libraryRef="DB2JCCLib">
</jdbcDriver>
<properties.db2.jcc databaseName="DB2" serverName="tsoc.nnnn.com" portNumber="5002"/>
</dataSource>**
DB2 Jars are in the give location.
Am i missing something or any pointer how to debug this ??
Thanks

Answer 1

If using a dataSource in server configuration, Liberty would try to load data source implementation classes such as
com.ibm.db2.jcc.DB2DataSource
com.ibm.db2.jcc.DB2ConnectionPoolDataSource
com.ibm.db2.jcc.DB2XADataSource
rather than the driver class that shows in the exception,
com.ibm.db2.jcc.DB2Driver
so a good guess (lacking the exception stack) is that your application may be trying to use DriverManager.getConnection instead of using the configured dataSource. If you really want to do this (you will be losing out on many capabilities provided by the application server such as global transaction enlistment and connection pooling) then you would need to make the JDBC driver libraries directly available to your application.
For example,
<application location=...>
<classloader commonLibraryRef="DB2JCCLib"/>
</application>