WebSphere Commerce 7 | Upgraded WCS 7.0.0.6 to WCS 7.0.0.7 | Fix Pack 7 | Payment Pages are Failing | CWXFR0020E, CWXFD3134E

I have upgraded my toolkit from WCS 7.0.0.6 to WCS 7.0.0.7 (Applied Fix Pack 7 - Database is DB2) and after that, payment pages are failing with the following exception,

[5/9/16 23:32:42:137 CLT] 00000024 bod   E   CWXFD3134E: Execution of get request failed. CWXFR0020E: Could not get a database connection for component com.ibm.commerce.wallet
com.ibm.commerce.foundation.internal.common.exception.FoundationApplicationException: CWXFD3134E: Execution of get request failed. CWXFR0020E: Could not get a database connection for component com.ibm.commerce.wallet
at com.ibm.commerce.foundation.server.command.bod.bom.AbstractFetchNounUsingBusinessObjectMediatorCmdImpl.performExecute(AbstractFetchNounUsingBusinessObjectMediatorCmdImpl.java:255)
at com.ibm.commerce.foundation.internal.server.command.impl.CommandTarget.executeCommand(CommandTarget.java:66)
at com.ibm.websphere.command.TargetableCommandImpl.execute(TargetableCommandImpl.java:139)

While doing the debug of the issue, I have noticed it is not pointing to my actual DB2 Database. Instead, it is pointing to Cloudscape Database.

Here is the issue,
1. Features has been enabled with FEP5 with Cloudscape
2. On top of it, setdbtype command has been run with DB2
3. Because of this, DB2 related libraries are not available in WC Project and instead, it has Cloudscape related libraries.

Resolution:
Copy all the JAR files from (DB2),
WCDE_installdir\components\foundation\wc.ear.ext\db2 to WCDE_installdir\workspace\WC