3283087 - Upgrade error in phase MAIN_SWITCH/SUBMOD_MIG_SWITCH_NEW/HDB_ABAP_POST_LOAD_EXEC

You find the following error message in the HdbCmdOut.log while performing a HANA upgrade via SUM.

    com.sap.hdb.sl.lib.instance.DatabaseConfigurationSectionMultiDB | HANA parameter 'min_hours_since_last_merge_of_part' is not set. Nothing to do for unset.
    com.sap.hdb.sl.lib.instance.DatabaseConfigurationSectionMultiDB | HANA parameter 'num_merge_token' is not set. Nothing to do for unset.
    com.sap.hdb.sl.lib.connection.sql.JdbcConnection | Run SQL command: ALTER SYSTEM ALTER CONFIGURATION ('indexserver.ini','SYSTEM') UNSET ('mergedog','token_per_table') WITH RECONFIGURE
    com.sap.hdb.sl.lib.connection.sql.JdbcConnection | Run SQL command: ALTER SYSTEM ALTER CONFIGURATION ('indexserver.ini','SYSTEM') UNSET ('mergedog','critical_merge_decision_func') WITH RECONFIGURE
    com.sap.hdb.sl.lib.connection.sql.JdbcConnection | Run SQL command: ALTER SYSTEM ALTER CONFIGURATION ('indexserver.ini','SYSTEM') UNSET ('mergedog','auto_merge_decision_func') WITH RECONFIGURE
    com.sap.hdb.sl.lib.connection.sql.JdbcConnection | Run SQL command: ALTER SYSTEM ALTER CONFIGURATION ('global.ini','SYSTEM') UNSET ('persistence','savepoint_interval_s') WITH RECONFIGURE
    com.sap.hdb.sl.lib.instance.DatabaseXmlParameter | Invalid parameter format.
    com.sap.hdb.sl.lib.connection.sql.JdbcConnection | Run SQL command: ALTER SYSTEM ALTER CONFIGURATION ('indexserver.ini', 'SYSTEM' ) SET ('statisticsserver', 'active') = 'true' WITH RECONFIGURE
    com.sap.hdb.core.main.cmd.HdbCmdMain | Error during execution of HdbCmdClazz section!
    com.sap.hdb.core.main.cmd.HdbCmdMain | Invalid parameter format.

SAP HANA, platform edition 2.0

Upgrade, Parameter, HDB_ABAP_POST_LOAD_EXEC. , KBA , HAN-LM-UPG-SAP , Upgrade of SAP Systems on HANA , Problem