35 Oracle深度學習筆記——關於dbms shared pool MARKHOT
35.Oracle深度學習筆記——關於dbms_shared_pool. MARKHOT
歡迎轉載，轉載請標明出處：http://blog.csdn.net/notbaron/article/details/50859148
BMS_SHARED_POOL包提供存儲過程來將PL/SQL對象或SQL遊標固定到Oracle 共享池。一旦這些對象固定之後，將不再參與aged out,而
是常駐內存，即便是使用alter system flush shared_pool也不會將對象清除出共享池。
查看包
中的過程命令如下：
idle> desc dbms_shared_pool;
PROCEDURE ABORTED_REQUEST_THRESHOLD
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
THRESHOLD_SIZE NUMBER IN
PROCEDURE KEEP
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
NAME VARCHAR2 IN
FLAG CHAR IN DEFAULT
PROCEDURE KEEP
Argument Name Type In/Out Default?
------------------------------ ----------------------------- --------
SCHEMA VARCHAR2 IN
OBJNAME VARCHAR2 IN
NAMESPACE NUMBER IN
HEAPS NUMBER IN
PROCEDURE KEEP
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
HASH VARCHAR2 IN
NAMESPACE NUMBER IN
HEAPS NUMBER IN
PROCEDURE MARKHOT
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
SCHEMA VARCHAR2 IN
OBJNAME VARCHAR2 IN
NAMESPACE NUMBER IN DEFAULT
GLOBAL BOOLEAN IN DEFAULT
PROCEDURE MARKHOT
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
HASH VARCHAR2 IN
NAMESPACE NUMBER IN DEFAULT
GLOBAL BOOLEAN IN DEFAULT
PROCEDURE PURGE
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
NAME VARCHAR2 IN
FLAG CHAR IN DEFAULT
HEAPS NUMBER IN DEFAULT
PROCEDURE PURGE
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
SCHEMA VARCHAR2 IN
OBJNAME VARCHAR2 IN
NAMESPACE NUMBER IN
HEAPS NUMBER IN
PROCEDURE PURGE
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
HASH VARCHAR2 IN
NAMESPACE NUMBER IN
HEAPS NUMBER IN
PROCEDURE SIZES
Argument Name Type In/Out Default?
------------------------------ ----------------------------- --------
MINSIZE NUMBER IN
PROCEDURE UNKEEP
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
NAME VARCHAR2 IN
FLAG CHAR IN DEFAULT
PROCEDURE UNKEEP
ArgumentName Type In/Out Default?
----------------------------------------------------- ------ --------
SCHEMA VARCHAR2 IN
OBJNAME VARCHAR2 IN
NAMESPACE NUMBER IN
PROCEDURE UNKEEP
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
HASH VARCHAR2 IN
NAMESPACE NUMBER IN
PROCEDURE UNMARKHOT
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
SCHEMA VARCHAR2 IN
OBJNAME VARCHAR2 IN
NAMESPACE NUMBER IN DEFAULT
GLOBAL BOOLEAN IN DEFAULT
PROCEDURE UNMARKHOT
Argument Name Type In/Out Default?
----------------------------------------------------- ------ --------
HASH VARCHAR2 IN
NAMESPACE NUMBER IN DEFAULT
GLOBAL BOOLEAN IN DEFAULT
關於MARKHOT
This procedure marks a library cache objectas a hot object.
語法如下：
DBMS_SHARED_POOL.MARKHOT (
schema VARCHAR2,
objname VARCHAR2,
namespace NUMBER DEFAULT1, global BOOLEAN DEFAULT TRUE);
DBMS_SHARED_POOL.MARKHOT (
hash VARCHAR2,
namespace NUMBER DEFAULT 1,
global BOOLEAN DEFAULTTRUE);
也可以使用KEEP過程
查看在內存中的對象
SELECT * FROM v$db_object_cache；
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35 Oracle深度學習筆記——關於dbms shared pool MARKHOT