Dbms_xplan.diff_plan_awr

Question

Anyone had any luck running this on 11.2 (it is a new feature) ?
I first found you cannot do a
select dbms_xplan.diff_plan_awr('xxx',11,22) from dual;
ERROR at line 1:
ORA-14552: cannot perform a DDL, commit or rollback inside a query or DML
ORA-06512: at "SYS.PRVT_ADVISOR", line 4820
ORA-14551: cannot perform a DML operation inside a query
ORA-06512: at "SYS.DBMS_SQLTUNE_INTERNAL", line 7603
ORA-06512: at "SYS.PRVT_SQLADV_INFRA", line 40
ORA-06512: at "SYS.DBMS_XPLAN", line 6741
ORA-06512: at "SYS.DBMS_XPLAN", line 6927
Then I tried
declare statement_diff varchar2(4000);
begin
statement_diff:= dbms_xplan.diff_plan_awr('xx',11,22) ;
--dbms_output.put_line(statement_diff);
end;
and I get
ERROR at line 1:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00214: CDATA section did not end in "]]>"
ORA-06512: at "SYS.PRVT_ADVISOR", line 2693
ORA-06512: at "SYS.DBMS_ADVISOR", line 241
ORA-06512: at "SYS.DBMS_SQLDIAG", line 986
ORA-06512: at "SYS.DBMS_XPLAN", line 6114
ORA-06512: at "SYS.DBMS_XPLAN", line 6938
ORA-06512: at line 4

Answer 1

Here is my actual example (I try not to post "real" information, but sql_id's are kind of generic anyway).
declare statement_diff varchar2(4000);
begin
statement_diff:= dbms_xplan.diff_plan_awr('9t8g4ya227qv4',3439270568,1447207991) ;
--dbms_output.put_line(statement_diff);
end;
I did notice that when there is no data it comes back with 0 rows.. It only get's an error when it executes and finds data.