SQL Access Advisor is not working

Question

Hi all .
I'm running manually a script in order to improve database performance by SQL Access Advisor 10.2 . But it seems not goot when hitting en error .
DECLARE
l_taskname VARCHAR2(30) := 'test_sql_access_task';
l_task_desc VARCHAR2(128) := 'Test SQL Access Task';
l_wkld_name VARCHAR2(30) := 'test_work_load';
l_saved_rows NUMBER := 0;
l_failed_rows NUMBER := 0;
l_num_found NUMBER;
BEGIN
-- Create an SQL Access Advisor task.
DBMS_ADVISOR.create_task (
advisor_name => DBMS_ADVISOR.sqlaccess_advisor,
task_name => l_taskname,
task_desc => l_task_desc);
-- Reset the task.
DBMS_ADVISOR.reset_task(task_name => l_taskname);
-- Create a workload.
SELECT COUNT(*)
INTO l_num_found
FROM user_advisor_sqlw_sum
WHERE workload_name = l_wkld_name;
IF l_num_found = 0 THEN
DBMS_ADVISOR.create_sqlwkld(workload_name => l_wkld_name);
END IF;
-- Link the workload to the task.
SELECT count(*)
INTO l_num_found
FROM user_advisor_sqla_wk_map
WHERE task_name = l_taskname
AND workload_name = l_wkld_name;
IF l_num_found = 0 THEN
DBMS_ADVISOR.add_sqlwkld_ref(
task_name => l_taskname,
workload_name => l_wkld_name);
END IF;
-- Set workload parameters.
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'ACTION_LIST', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'MODULE_LIST', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'SQL_LIMIT', DBMS_ADVISOR.ADVISOR_UNLIMITED);
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'ORDER_LIST', 'PRIORITY,OPTIMIZER_COST');
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'USERNAME_LIST', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_sqlwkld_parameter(l_wkld_name, 'VALID_TABLE_LIST', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.import_sqlwkld_sqlcache(l_wkld_name, 'REPLACE', 2, l_saved_rows, l_failed_rows);
-- Set task parameters.
DBMS_ADVISOR.set_task_parameter(l_taskname, '_MARK_IMPLEMENTATION', 'FALSE');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'EXECUTION_TYPE', 'INDEX_ONLY');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'MODE', 'COMPREHENSIVE');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'STORAGE_CHANGE', DBMS_ADVISOR.ADVISOR_UNLIMITED);
DBMS_ADVISOR.set_task_parameter(l_taskname, 'DML_VOLATILITY', 'TRUE');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'ORDER_LIST', 'PRIORITY,OPTIMIZER_COST');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'WORKLOAD_SCOPE', 'PARTIAL');
DBMS_ADVISOR.set_task_parameter(l_taskname, 'DEF_INDEX_TABLESPACE', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_task_parameter(l_taskname, 'DEF_INDEX_OWNER', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_task_parameter(l_taskname, 'DEF_MVIEW_TABLESPACE', DBMS_ADVISOR.ADVISOR_UNUSED);
DBMS_ADVISOR.set_task_parameter(l_taskname, 'DEF_MVIEW_OWNER', DBMS_ADVISOR.ADVISOR_UNUSED);
-- Execute the task.
DBMS_ADVISOR.execute_task(task_name => l_taskname);
END;
can you help me out ?
REgard .

Answer 1

Error report:
ORA-13600: error encountered in Advisor
ORA-13635: The value provided for parameter ADJUSTED_SCALEUP_GREEN_THRESH cannot be converted to a number.
ORA-06512: at "SYS.PRVT_ADVISOR", line 3902
ORA-06512: at "SYS.PRVT_ADVISOR", line 3765
ORA-06512: at "SYS.DBMS_ADVISOR", line 56
ORA-06512: at line 10
13600. 00000 - "error encountered in Advisor\n%s"
*Cause:    An error occurred in the Advisor.
This message will be followed by a second message giving
more details about the nature of the error.
*Action:   See the Advisor documentation
for an explanation of the second error message.