Oracle提供了一个管理共享池对象的接口——DBMS_SHARED_POOL包，不过这个包在11g以前的版本是默认没有安装的。

先看一下11.2的情况：

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Solaris: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 – Production

SQL> 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
 Argument Name                  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

SQL>

11.2中，这个包在数据库创建的时刻就会默认安装完成，而且在11.2中，这个包的功能得到了进一步的增强。除了给一些已有的过程增加了重载的过程外，还新增了MARKHOT以及和它对应的UNMARKHOT过程。MARKHOT用来标记一个LIBRARY CACHE对象为热对象，而UNMARKHOT则取消这个标记。

在10g及以前版本，这个包在数据库创建后并未马上创建需要手工调用$ORACLE_HOME/rdbms/admin/dbmspool.sql来创建：

SQL> select * from v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0      Production
TNS for Linux: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production

SQL> desc dbms_shared_pool
ERROR:
ORA-04043: object dbms_shared_pool does not exist

SQL> @?/rdbms/admin/dbmspool.sql

Package created.

Grant succeeded.

View created.

Package body created.

SQL> 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 PURGE
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 NAME                           VARCHAR2                IN
 FLAG                           CHAR                    IN     DEFAULT
 HEAPS                          NUMBER                  IN     DEFAULT
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

在10g中，Oracle将包体创建的调用脚本添加到了dbmspool.sql中，而在更早的版本中，除了需要执行dbmspool.sql脚本意外，还需要手工方式执行$ORACLE_HOME/rdbms/admin/prvtpool.plb脚本来创建包体。