3304357 - Deployment of EP BASIS SCA fails due to a locking issue.

Deployment of EP BASIS SCA fails with the following errors :

"com.sap.engine.frame.core.locking.LockException: Cannot lock at least one of the X locks for the owner XXXXXXXXXXXXXXXXXXXXXXXXXXX...................XXXXX; it is used by another owner. The lock collision occurred with user {X}

        at com.sap.engine.core.locking.impl3.LockingManagerImpl.lockInternal(LockingManagerImpl.java:218)

         at com.sap.engine.core.locking.AbstractLockingManagerImpl.lock(AbstractLockingManagerImpl.java:515)

        at com.sap.engine.core.locking.ServerInternalLockingImpl.lock(ServerInternalLockingImpl.java:72)

        at com.sap.engine.services.deploy.server.utils.LockUtils.lock(LockUtils.java:59)

        at com.sap.engine.services.deploy.server.utils.concurrent.impl.EnqueueLockerImpl.lock(EnqueueLockerImpl.java:26)

        at com.sap.engine.services.deploy.server.utils.concurrent.impl.LockManagerImpl.obtainEnqueueLocks(LockManagerImpl.java:270)

        at com.sap.engine.services.deploy.server.utils.concurrent.impl.LockManagerImpl.lock(LockManagerImpl.java:125)

        at com.sap.engine.services.deploy.server.utils.concurrent.impl.LockManagerImpl.lockReferenced(LockManagerImpl.java:435)

        at com.sap.engine.services.deploy.server.application.StartTransaction.lock(StartTransaction.java:158)

        at com.sap.engine.services.deploy.server.TransactionManager.lock(TransactionManager.java:121)

        at com.sap.engine.services.deploy.server.TransactionManager.registerTransaction(TransactionManager.java:80). "

• SAP NetWeaver Java 7.50
• Enterprise Portal 7.5 

Deployment , locking , LockException , Enterprise Portal , SCA EP-BASIS , upgrade , update. , KBA , BW-BEX-ET-WJR , BEx Web Java Runtime , EP-PIN-PRT , Portal Runtime , Problem