Error generating from node1 while running AWR
ora-20020: ORA-06512:
ERROR at line 1:
ORA-20020: Database/Instance 1303/1 does not exist in DBA_HIST_DATABASE_INSTANCE
ORA-06512: at "SYS.DBMS_SWRF_REPORT_INTERNAL", line 11941
ORA-06512: at "SYS.DBMS_SWRF_REPORT_INTERNAL", line 18540
ORA-06512: at "SYS.DBMS_WORKLOAD_REPOSITORY", line 1133
ORA-06512: at line 1
what is the reason and how can i resolved it