IBM Cognos: XQE-JDB-0004 A problem occurred finding the driver class “com.ibm.db2.jcc.DB2Driver”.

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When you are trying to test the connection to the DB2 database from Cognos configuration and you are getting this error message:

XQE-JDB-0004 A problem occurred finding the driver class "com.ibm.db2.jcc.DB2Driver".

This error cause because the Cognos cannot find the DB2 drivers. Solution of this problem is simple. You have to copy files db2jcc.jar and db2jcc4.jar to <Install_Cognos>\v5dataserver\lib and <Install_Cognos>\webapps\p2pd\WEB-INF\lib.

After you copy these files you need to restart the Cognos server.

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