2464872 - Issue with PAR files migration in MIGRATE-FILE-SYSTEM-DATA phase of Upgrade

During the JAVA stack upgrade using SUM with target Netweaver 7.3 or higher, the Software Update Manager (SUM) stops with errors in MIGRATE-FILE-SYSTEM-DATA phase logs similar to:

Directory: /SUM/sdt/log/SUM

Logfile    :MIGRATE-FILE-SYSTEM-DATA_XX.LOG

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Apr 27, 2017 12:00:37 PM [Info ]: Archive file /mnt1/SUM_BJ2/SUM/sdt/data/mig/DEPLOYARCHIVES/webdynpro~migration.sda has been extracted to directory /mnt1/SUM_BJ2/SUM/sdt/migtool/webdynpro~migration.
Apr 27, 2017 12:00:37 PM [Error ]: The following problem has occurred during step execution: com.sap.sdt.util.diag.DiagException: Could not execute migration controllers for action migrate.filesystem.data and scenario all executed in slot filesystem.migrate.
Error while processing migration list /mnt1/SUM_BJ2/SUM/sdt/data/mig/MIGRATIONAUSF.LST.
Could not migrate some archives from migration list.Possible reason is Database is down.Check if database running
Error during migration of archive /mnt1/SUM/SUM/sdt/data/mig/DEPLOYARCHIVES/par_war_migration_controller.sda which has been extracted to directory /mnt1/SUM/SUM/sdt/migtool/par_war_migration_controller.Possible reason is Database is down.Check if database running
Could not execute MTI process. See log files /mnt1/SUM/SUM/sdt/log/SUM/JMT_FRAMEWORK_04.OUT and /mnt1/SUM/SUM/sdt/log/SUM/JMT_FRAMEWORK_04.ERR.
Return code condition success evaluated to false for process java for action RUN_MTI.
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Directory: /SUM/sdt/log/SUM
Logfile : MTI_PAR_WAR_MIGRATION_CONTROLLER_FILESYSTEM_MC_XX.ERR

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com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mcerr [Thread[main,5,main]] 
Error: Error while migrating controller com.sap.portal.prt.parmigration.controller.ParWarMigrationController. 
CSN component - BC-UPG-TLS-TLJ . Reason: <--Localization failed: ResourceBundle='com.sap.sdt.jmtx.MigrationToolResourceBundle', ID='par.id010', 
Arguments: ['A Fatal Error Occurred during the upgrade of portal application. 
Please refer to SAP note #1548124 for resolution.']--> : Can't find resource for bundle java.util.PropertyResourceBundle, key par.id010
Apr 27, 2017 11:41:11 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mcerr [Thread[main,5,main]] Error:

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Apr 27, 2017 11:59:21 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mc [Thread[main,5,main]] Info: Executing migration controller com.sap.portal.prt.parmigration.controller.ParWarMigrationController. CSN component for this controller - BC-UPG-TLS-TLJ.
Apr 27, 2017 11:59:21 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mc [Thread[main,5,main]] Info: Starting PAR WAR file migration.
Apr 27, 2017 11:59:21 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mc [Thread[main,5,main]] Info: The PAR WAR parameters are:/mnt1/SUM_BJ2/SUM/sdt/data/archives/portal portal inbox, /mnt1/SUM_BJ2/SUM/sdt/data/archives/pars par location, /mnt1/SUM_BJ2/SUM/sdt/config/ParWarMigrationComponents.properties input file.
Apr 27, 2017 11:59:21 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mc [Thread[main,5,main]] Info: Begin PAR WAR migration.
Apr 27, 2017 11:59:27 AM com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mc [Thread[main,5,main]] Error: A Fatal Error Occurred during the upgrade of portal application. Please refer to SAP note #1548124 for resolution.

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Note: This error could occur for any par file. The attached logs are just an example.

Upgrade using SUM

RUN-OFFLINE-MIGRATION, Migration, SUM, PAR, conversion, upgrade, JAVA,  portal, com.sap.portal.prt.parmigration.controller.par_war_migration_controller.filesystem_mcerr, MIGRATE-FILE-SYSTEM-DATA
, KBA , BC-UPG-TLS-TLJ , Upgrade tools for Java , Problem