Exception while deploying BPM Suite/BRMS 6.2 on tomcat server

Issue

WE have followed steps for the installation of BPMS/BRMS 6.2 on to of Tomcat server but it throws below exception:

WARNING [bitronix-recovery-thread] bitronix.tm.recovery.Recoverer.recoverAllResources error running recovery on resource 'jdbc/jbpm', resource marked as failed (background recoverer will retry recovery)
. . . 
Caused by: bitronix.tm.internal.BitronixRuntimeException: incremental recovery failed when trying to acquire a connection from failed resource 'jdbc/jbpm'
    at bitronix.tm.resource.common.XAPool.getConnectionHandle(XAPool.java:103)
    at bitronix.tm.resource.jdbc.PoolingDataSource.startRecovery(PoolingDataSource.java:284)
    ... 4 more
Caused by: bitronix.tm.recovery.RecoveryException: failed recovering resource jdbc/jbpm
    at bitronix.tm.recovery.IncrementalRecoverer.recover(IncrementalRecoverer.java:100)
    at bitronix.tm.resource.common.XAPool.getConnectionHandle(XAPool.java:100)
    ... 5 more
Caused by: javax.transaction.xa.XAException
    at oracle.jdbc.xa.OracleXAResource.recover(OracleXAResource.java:709)