DBMS_ADVISOR execute task

Question

Since the upgrade from Oracle 10 to 11 I see that DBMS_ADVISOR.EXECUTE_TASK() fails with error message:
ORA-01843: not a valid month
ORA-06512: at "SYS.DBMS_ADVISOR", line 201
ORA-06512: at line 30I tried to look in dbmsadv.sql but couldn't find the reason. It used to work with Oracle 10.

Answer 1

Could someone give me some suggestion as to why I am getting invalid month? Below is my sqlset. This worked fine with 10g:
spool output.dat
--Create SQL Workload - easily done with the statements gathered in a snapshot.
--For example, from 7am to 8am, snapid range is 3153 - 3154
#Use this for new SQLSET
exec DBMS_SQLTUNE.DROP_SQLSET('E_TEST_SQLSET');
exec DBMS_SQLTUNE.CREATE_SQLSET('E_TEST_SQLSET');
declare
  baseline_ref_cursor DBMS_SQLTUNE.SQLSET_CURSOR;
begin
  open baseline_ref_cursor for
     select value(p) from table (DBMS_SQLTUNE.SELECT_WORKLOAD_REPOSITORY(9027, 9029,  'execut
ions > 1 and disk_reads > 100', NULL, 'disk_reads')) p;
  DBMS_SQLTUNE.LOAD_SQLSET('E_TEST_SQLSET', baseline_ref_cursor);
end;
--To see what qualifies for analysis execute the following
set long 1024
select SQL_TEXT from table(DBMS_SQLTUNE.SELECT_SQLSET('E_TEST_SQLSET'));
--To analyize the tuning set:
VARIABLE name VARCHAR2(20)
begin
  :name := 'E_TEST_WORKLOAD';
  :task_name := 'E_SQLACCESS_TASK';
  DBMS_ADVISOR.DELETE_TASK (:task_name);
  DBMS_ADVISOR.DELETE_SQLWKLD(:name);
  DBMS_ADVISOR.CREATE_SQLWKLD(:name);
end;
variable saved_stmts NUMBER
variable failed_stmts NUMBER
begin
  DBMS_ADVISOR.IMPORT_SQLWKLD_STS('E_TEST_WORKLOAD', 'E_TEST_SQLSET', 'NEW', 1, :saved_st
mts, :failed_stmts);
end;
PRINT saved_stmts
PRINT failed_stmts
VARIABLE task_id NUMBER
VARIABLE task_name VARCHAR2(255)
begin
       :task_name := 'E_SQLACCESS_TASK';
       DBMS_ADVISOR.CREATE_TASK ('SQL Access Advisor', :task_id, :task_name);
end;
PRINT task_id
--Now we need to associate the SQL Workload with the Tuning Task:
begin
    DBMS_ADVISOR.ADD_SQLWKLD_REF('E_SQLACCESS_TASK', 'E_TEST_WORKLOAD');
end;
PRINT task_name
--Now execute the advisor task
begin
       DBMS_ADVISOR.EXECUTE_TASK('E_SQLACCESS_TASK');
     end;
SELECT rec_id, action_id, substr(command,1,30) AS command
     FROM user_advisor_actions
     WHERE task_name = :task_name
     ORDER BY rec_id, action_id;
create directory advisor_results as '/tmp/tunedir';
exec DBMS_ADVISOR.CREATE_FILE(DBMS_ADVISOR.GET_TASK_SCRIPT(:task_name), 'DUMPDIR', 'sts_scrip
t.sql');
-- Rank based on cost
SELECT r.type, r.Rank, r.benefit, f.impact_type, f.impact, f.message
FROM dba_advisor_recommendations r, dba_advisor_findings f
WHERE r.task_name = 'TASK_4502' AND r.finding_id = f.finding_id AND r.task_id =  f.task_id
ORDER BY r.rank ASC, r.benefit DESC;I get
TASK_NAME
E_SQLACCESS_TASK
begin
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-01843: not a valid month
ORA-06512: at "SYS.DBMS_ADVISOR", line 201
ORA-06512: at line 2