Disable the Evolve Job SYS_AUTO_SPM_EVOLVE_TASK in Oracle 12c

为了禁用自动SPM EVOLVE TASK需要执行以下操作
1. 查看自动SPM Evolve Task是否启用

SQL> COL CLIENT_NAME FORMAT a20
SQL>
SQL> SELECT CLIENT_NAME, STATUS
  2  FROM   DBA_AUTOTASK_CLIENT
  3  WHERE  CLIENT_NAME = 'sql tuning advisor';

CLIENT_NAME          STATUS
-------------------- --------
sql tuning advisor   ENABLED

2.禁用自动SPM Evolve Task

SQL> BEGIN
  2    DBMS_AUTO_TASK_ADMIN.DISABLE (
  3      client_name => 'sql tuning advisor'
  4  ,   operation   => NULL
  5  ,   window_name => NULL
  6  );
  7  END;
  8  /

PL/SQL procedure successfully completed.

SQL> SELECT CLIENT_NAME, STATUS
  2  FROM   DBA_AUTOTASK_CLIENT
  3  WHERE  CLIENT_NAME = 'sql tuning advisor';

CLIENT_NAME          STATUS
-------------------- --------
sql tuning advisor   DISABLED

3. 查看SPM Evolve Task的参数设置

SQL> SELECT parameter_name, parameter_value
  2  FROM dba_advisor_parameters
  3  WHERE task_name = 'SYS_AUTO_SPM_EVOLVE_TASK'
  4  AND parameter_value != 'UNUSED'
  5  ORDER BY parameter_name;

PARAMETER_NAME                                                                   PARAMETER_VALUE
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
ACCEPT_PLANS                                                                     true
ALTERNATE_PLAN_BASELINE                                                          EXISTING
ALTERNATE_PLAN_LIMIT                                                             0
ALTERNATE_PLAN_SOURCE                                                            CURSOR_CACHE+AUTOMATIC_WORKLOAD_REPOSITORY
DAYS_TO_EXPIRE                                                                   UNLIMITED
DEFAULT_EXECUTION_TYPE                                                           SPM EVOLVE
EXECUTION_DAYS_TO_EXPIRE                                                         30
JOURNALING                                                                       INFORMATION
MODE                                                                             COMPREHENSIVE
TARGET_OBJECTS                                                                   1
TIME_LIMIT                                                                       3600
_SPM_VERIFY                                                                      TRUE

12 rows selected

4. 关闭Automatic Evolving of Baselines

SQL> BEGIN
  2  DBMS_SPM.set_evolve_task_parameter(
  3  task_name => 'SYS_AUTO_SPM_EVOLVE_TASK',
  4  parameter => 'ACCEPT_PLANS',
  5  value => 'FALSE');
  6  END;
  7  /

PL/SQL procedure successfully completed.

SQL> SELECT parameter_name, parameter_value
  2  FROM dba_advisor_parameters
  3  WHERE task_name = 'SYS_AUTO_SPM_EVOLVE_TASK'
  4  AND parameter_value != 'UNUSED'
  5  ORDER BY parameter_name;

PARAMETER_NAME                                                                   PARAMETER_VALUE
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
ACCEPT_PLANS                                                                     FALSE
ALTERNATE_PLAN_BASELINE                                                          EXISTING
ALTERNATE_PLAN_LIMIT                                                             0
ALTERNATE_PLAN_SOURCE                                                            CURSOR_CACHE+AUTOMATIC_WORKLOAD_REPOSITORY
DAYS_TO_EXPIRE                                                                   UNLIMITED
DEFAULT_EXECUTION_TYPE                                                           SPM EVOLVE
EXECUTION_DAYS_TO_EXPIRE                                                         30
JOURNALING                                                                       INFORMATION
MODE                                                                             COMPREHENSIVE
TARGET_OBJECTS                                                                   1
TIME_LIMIT                                                                       3600
_SPM_VERIFY                                                                      TRUE

12 rows selected

5. 启用Automatic Evolving of Baselines

SQL> BEGIN
  2  DBMS_SPM.set_evolve_task_parameter(
  3  task_name => 'SYS_AUTO_SPM_EVOLVE_TASK',
  4  parameter => 'ACCEPT_PLANS',
  5  value => 'TRUE');
  6  END;
  7  /

PL/SQL procedure successfully completed.

SQL> SELECT parameter_name, parameter_value
  2  FROM dba_advisor_parameters
  3  WHERE task_name = 'SYS_AUTO_SPM_EVOLVE_TASK'
  4  AND parameter_value != 'UNUSED'
  5  ORDER BY parameter_name;

PARAMETER_NAME                                                                   PARAMETER_VALUE
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
ACCEPT_PLANS                                                                     true
ALTERNATE_PLAN_BASELINE                                                          EXISTING
ALTERNATE_PLAN_LIMIT                                                             0
ALTERNATE_PLAN_SOURCE                                                            CURSOR_CACHE+AUTOMATIC_WORKLOAD_REPOSITORY
DAYS_TO_EXPIRE                                                                   UNLIMITED
DEFAULT_EXECUTION_TYPE                                                           SPM EVOLVE
EXECUTION_DAYS_TO_EXPIRE                                                         30
JOURNALING                                                                       INFORMATION
MODE                                                                             COMPREHENSIVE
TARGET_OBJECTS                                                                   1
TIME_LIMIT                                                                       3600
_SPM_VERIFY                                                                      TRUE

12 rows selected

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