v$sqlarea 之LAST_ACTIVE_TIME

LAST_ACTIVE_TIME;query plan上次active的时间

PARSING_SCHEMA_NAME： parse child cursor的用户

SQL> select 'zyj' from dual;

'ZY
---
zyj

SQL> select sql_text, parsing_schema_name, last_active_time
  from v$sqlarea
 where parsing_schema_name = 'TEST'
   and SQL_TEXT like '%zyj%'  2    3    4  ;

SQL_TEXT
--------------------------------------------------------------------------------
PARSING_SCHEMA_NAME	       LAST_ACTIVE_TIME
------------------------------ -------------------
select 'zyj' from dual
TEST			       2014-10-22 14:40:34

select sql_text, parsing_schema_name, last_active_time	 from v$sqlarea  where p
arsing_schema_name = 'TEST'  and SQL_TEXT like '%zyj%'
TEST			       2014-10-22 14:40:49

再次执行:
SQL> select sql_text, parsing_schema_name, last_active_time
  from v$sqlarea
 where parsing_schema_name = 'TEST'
   and SQL_TEXT like '%zyj%'  2    3    4  ;

SQL_TEXT
--------------------------------------------------------------------------------
PARSING_SCHEMA_NAME	       LAST_ACTIVE_TIME
------------------------------ -------------------
select 'zyj' from dual
TEST			       2014-10-22 14:44:04

select sql_text, parsing_schema_name, last_active_time	 from v$sqlarea  where p
arsing_schema_name = 'TEST'  and SQL_TEXT like '%zyj%'
TEST			       2014-10-22 14:40:49

清空shared pool,再次执行

SQL> select sql_text, parsing_schema_name, last_active_time
  from v$sqlarea
 where parsing_schema_name = 'TEST'
   and SQL_TEXT like '%zyj%'  2    3    4  ;

SQL_TEXT					   PARSING_SCHEMA_NAME		  LAST_ACTIVE_TIME
-------------------------------------------------- ------------------------------ -------------------
select sql_text, parsing_schema_name, last_active_ TEST 			  2014-10-22 14:46:31
time   from v$sqlarea  where parsing_schema_name =
 'TEST'    and SQL_TEXT like '%zyj%'

select 'zyj' from dual				   TEST 			  2014-10-22 14:45:55