2577394 - Dual stack split failed due to error "Unknown database type"

After upgrading solution manager to 7.2, dual stack split is peformed. In phase Dual-Stack Split > Oracle > Move Java Database > Distributed System > Export Java Stack, error below happens.

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Last error reported by the step: The JVM reports an exception during execution of class ( com.sap.sdt.ins.component.dss_create_kernel_export_for_osdb_migration_dialogs.AskForOSDBMigration ) and function executeStepClass. DETAILS: The reported error message from JVM is: java.lang.IllegalArgumentException: Unknown database type ''.
at com.sap.sdt.inst.services.util.DbType.getDBType(DbType.java:45)
at com.sap.sdt.ins.component.dss_create_kernel_export_for_osdb_migration_dialogs.AskForOSDBMigration.init(AskForOSDBMigration.java:62)
at com.sap.sdt.ins.component.dss_create_kernel_export_for_osdb_migration_dialogs.AskForOSDBMigration.execute(AskForOSDBMigration.java:43)

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Dual stack split for Solution manager 7.2, Move Java Database

dual stack split, Unknown database type, javaSteps, Move Java Database, Export Java Stack , KBA , BC-INS-MIG , OS/DB Migrations with SWPM and DB refresh , Problem