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EM13C : Schema Synchronizations Fails with NullPointerException Error (Doc ID 2918013.1)

Last updated on APRIL 17, 2023

Applies to:

Enterprise Manager for Oracle Database - Version to [Release 13c]
Information in this document applies to any platform.


In Enterprise Manager (EM) Cloud Control, Schema Synchronizations Fails with NullPointerException

Schema > Change Management > Schema Synchronizations > Generate Script fails.

Synchronization Script Generation step fails with following error:

The job encountered and error. Please see the logs for details.

Following are the log files in the Oracle Management Server host:

Error stack generated from <EM_Instance_Home>/em/EMGC_OMS1/sysman/log/emoms.trc file:

Synchronization: IN generateSynchScript...
Synchronization: validated parameters.
Starting Synchronizationjob testing...
m_username : <UserName>
m_password : ****** m_role : normal
m_targetName : <TargetName>
m_targetType : oracle_pdb
m_destinationUsername : <Dest_UserName>
m_destinationPassword : ******
m_destinationRole : normal
m_destinationTargetName : <Dest_TargetName>
m_destinationTargetType : oracle_pdb
m_synchid : <SyncID>
m_synchflag : SOURCE_DB
- open source connection
- open dest connection
Change Manager Back-end Exception: java.lang.NullPointerException java.lang.NullPointerException
at oracle.sysman.dbTarget.db.changemgr.emo.util.CMSynchTriggerWorkItem.checkDependencies(
at oracle.sysman.dbTarget.db.changemgr.emo.util.CMSynchWorkItem.doDependencyAnalysis(
at oracle.sysman.dbTarget.db.changemgr.emo.util.CMSynchWorkItem.initialProcess(



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