ORA-06508: PL/SQL: could not find program unit being called: "SYS.DICTIONARY_OBJ_TYPE"

While running DAC, my most of the job failed due to below reason :

ANOMALY INFO::: Error while executing : TRUNCATE TABLE:W_xxxxx_GS
MESSAGE:::com.siebel.etl.database.IllegalSQLQueryException: DataWarehouse:TRUNCATE TABLE W_xxxxx_GS
ORA-00604: error occurred at recursive SQL level 1
ORA-04068: existing state of packages has been discarded
ORA-04065: not executed, altered or dropped stored procedure "SYS.DICTIONARY_OBJ_TYPE"
ORA-06508: PL/SQL: could not find program unit being called: "SYS.DICTIONARY_OBJ_TYPE"
ORA-06512: at line 2

Could anyone help me to resolve this issue ?