2237715 - NullPointerException: while trying to invoke the method java.sql.Connection.prepareStatement

MII transaction is called via MII_TRANS_EXT activity and fails with exception:

SAP MII transaction path/transaction failed with message: java.lang.NullPointerException: while trying to invoke the method java.sql.Connection.prepareStatement(java.lang.String) of a null object loaded from local variable 'connection' (Message 10059)

in case of Oracle database. In case of MS SQL Server the exception may look like:

com.sap.engine.services.dbpool.exceptions.BaseSQLException: ResourceException occurred in method ConnectionFactoryImpl.getConnection(): com.sap.engine.services.connector.exceptions.BaseResourceException: The resource "SAPMEINT" does not support two-phase commit and cannot be enlisted in the current transaction, because another non supporting two-phase commit resource is already enlisted for component "ejbContexts/sap.com/xapps~xmii~ear/sap.com~xapps~xmii~ejb.jar/TransactionRunnerBean" in application "sap.com/xapps~xmii~ear". Only one of the enlisted resources is allowed to be non two-phase commit compliant.
at com.sap.engine.services.dbpool.cci.ConnectionFactoryImpl.getConnection(ConnectionFactoryImpl.java:60)
at com.sap.me.integration.frame.DBWrapper.getConnection(DBWrapper.java:65)
at com.sap.me.integration.dao.SAPIntQuery.getCustomDiscriminatorTransaction(SAPIntQuery.java:118)
at com.sap.me.integration.frame.workflow.BaseDocumentDiscriminator.getDocumentType(BaseDocumentDiscriminator.java:90)
at com.sap.me.integration.frame.workflow.WorkflowHelper.callBaseDiscriminatorTransaction(WorkflowHelper.java:167)
at com.sap.me.integration.frame.workflow.WorkflowHelper.enqueueMessage(WorkflowHelper.java:507)
at com.sap.me.integration.actions.workflow.Enqueuer.execute(Enqueuer.java:43)

SAP Manufacturing Execution

Extension , KBA , MFG-ME-INT , Integration , Problem