描述：失效Global Plsql Cache全局缓存中的对象，仅在enable_global_plsqlcache = on时可用。调用该函数的用户需要具有SYSADMIN权限。

参数：该函数为重载函数。当无入参时，将所有DATABASE内的所有全局缓存对象失效。

当指定schema、objname、objtype三个参数时可将当前DATABASE内的指定全局缓存对象失效。其中：schema为对象所属的schema名称；objname为对象名称；objtype为对象类型，对象为package类型时值为“package”，对象为函数或存储过程时值为“function”。

示例：

该函数不返回失效结果，可通过gs_glc_memory_detail视图查询，对象未被失效时可在视图中查找到对应的valid状态的行，失效后则没有对应的valid状态行。

invalidate_plsql_object所属的Schema为pg_catalog，但不指定Schema也可调用该函数。

--创建一个包pkg1和函数f2，查询视图缓存信息，状态为valid。
gaussdb=# CREATE SCHEMA testInvalidate;
CREATE SCHEMA
gaussdb=# SET CURRENT_SCHEMA TO testInvalidate;
SET
gaussdb=# CREATE OR REPLACE PACKAGE pkg1 AS
gaussdb$#     var1 VARCHAR;
gaussdb$# FUNCTION f1() RETURN VARCHAR;
gaussdb$# END pkg1;
gaussdb$# /
CREATE PACKAGE
gaussdb=# CREATE OR REPLACE PACKAGE BODY pkg1 AS
gaussdb$#   FUNCTION f1() RETURN VARCHAR
gaussdb$#   IS
gaussdb$#   BEGIN
gaussdb$#     var1 := '2';
gaussdb$# RETURN var1;
gaussdb$#   END;
gaussdb$# END pkg1;
gaussdb$# /
CREATE PACKAGE BODY
gaussdb=# CREATE OR REPLACE FUNCTION f2() RETURN VARCHAR
gaussdb-# IS
gaussdb$# DECLARE
gaussdb$# var2 VARCHAR := 'li2';
gaussdb$# BEGIN
gaussdb$#   var2='22';
gaussdb$#   RETURN var2;
gaussdb$# END
gaussdb$# /
CREATE FUNCTION
gaussdb=# CALL pkg1.f1();
 f1 
----
 2
(1 row)
gaussdb=# CALL f2();
 f2 
----
 22
(1 row)
gaussdb=# SELECT * FROM gs_glc_memory_detail WHERE schema = 'testinvalidate';
 contextname  | database |     schema     | type | status |       location       | env | usedsize | usecount |  oid  | isspec |           searchpath           | invalidreason 
--------------+----------+----------------+------+--------+----------------------+-----+----------+----------+-------+--------+--------------------------------+---------------
 GLC_PKG_pkg1 | postgres | testinvalidate | pkg  | valid  | in_global_hash_table |   0 |    19856 |        1 | 16755 | f      | addUser: false, schemas: 16754 | valid
 GLC_FUNC_f1  | postgres | testinvalidate | func | valid  | in_global_hash_table |   0 |    10840 |        1 | 16756 |        | addUser: false, schemas: 16754 | valid
 GLC_FUNC_f2  | postgres | testinvalidate | func | valid  | in_global_hash_table |   0 |    12072 |        1 | 16757 |        | addUser: false, schemas: 16754 | valid
(3 rows)
--调用函数，指定schema、函数名、类型即可将pkg1失效，再次查询视图，则没有pkg1对应的valid状态行
gaussdb=# SELECT invalidate_plsql_object('testinvalidate','pkg1','package');
 invalidate_plsql_object 
-------------------------
(1 row)
--如果要失效function，参数如下所示
gaussdb=# SELECT invalidate_plsql_object('testinvalidate','f2','function');
 invalidate_plsql_object 
-------------------------
(1 row)
--调用时没有入参，则将失效所有缓存对象
gaussdb=# SELECT invalidate_plsql_object();
 invalidate_plsql_object 
-------------------------
(1 row)

描述：获取存储过程创建的package、function的主要有效内存占用情况。enable_global_plsqlcache = off时该函数显示当前session中的存储过程内存情况，跨session查询暂不支持。调用该函数的用户需要有SYSADMIN权限。

参数：该函数需传入db_oid、obj_oid、obj_type三个参数，如传入参数不匹配，返回空行。具体参数说明见表1。其中db_oid、obj_oid传入0为默认查找cache中所有package、function的有效内存使用情况。

返回值类型：Tuple

gs_plsql_memory_object_detail函数显示数据库内满足查询条件的有效内存占用情况说明如表2所示。

示例：

--如下用例构造当enable_global_plsqlcache = on时，创建package和function，调用gs_plsql_memory_object_detail获取内存使用占用的情况。

gaussdb=# CREATE OR REPLACE PACKAGE my_package AS
gaussdb$#   PROCEDURE public_proc(a int, b int);
gaussdb$# END my_package;
gaussdb$# /
CREATE PACKAGE
gaussdb=# CREATE OR REPLACE PACKAGE BODY my_package AS
gaussdb$#   PROCEDURE public_proc(a int, b int) AS
gaussdb$#   BEGIN
gaussdb$#     RAISE NOTICE 'a + b = %', a + b;
gaussdb$#   END;
gaussdb$# END my_package;
gaussdb$# /
CREATE PACKAGE BODY
gaussdb=# BEGIN
gaussdb$#   my_package.public_proc(2, 3);
gaussdb$# END;
gaussdb$# /
NOTICE:  a + b = 5
CONTEXT:  SQL statement "CALL my_package.public_proc(2,3)"
PL/pgSQL function inline_code_block line 2 at PERFORM
ANONYMOUS BLOCK EXECUTE
gaussdb=# SELECT * FROM gs_plsql_memory_object_detail(0,16716,'pkg');
 object_oid |    context_name    |    item     |          searchpath           |       guc       |      file      | line | size | db_oid 
------------+--------------------+-------------+-------------------------------+-----------------+----------------+------+------+--------
      16716 | GLC_PKG_my_package | pkg         | addUser: false, schemas: 2200 | 303465209266176 | pl_package.cpp | 1143 | 1096 |  14584
      16716 | GLC_PKG_my_package | invalItems  | addUser: false, schemas: 2200 | 303465209266176 | NA             |    0 |    0 |  14584
      16716 | GLC_PKG_my_package | proc_list   | addUser: false, schemas: 2200 | 303465209266176 | list.cpp       |  110 | 3168 |  14584
      16716 | GLC_PKG_my_package | ndatums     | addUser: false, schemas: 2200 | 303465209266176 | pl_package.cpp | 1342 |    8 |  14584
      16716 | GLC_PKG_my_package | GSPLSQLType | addUser: false, schemas: 2200 | 303465209266176 | NA             |    0 |    0 |  14584
      16716 | GLC_PKG_my_package | namespace   | addUser: false, schemas: 2200 | 303465209266176 | pl_funcs.cpp   |  229 |  240 |  14584
(6 rows)
gaussdb=# SELECT * FROM gs_plsql_memory_object_detail(0,16717,'func');
 object_oid |     context_name     |    item    |          searchpath           |       guc       |     file     | line | size | db_oid 
------------+----------------------+------------+-------------------------------+-----------------+--------------+------+------+--------
      16717 | GLC_FUNC_public_proc | function   | addUser: false, schemas: 2200 | 303465209266176 | pl_comp.cpp  | 1538 | 1800 |  14584
      16717 | GLC_FUNC_public_proc | ndatums    | addUser: false, schemas: 2200 | 303465209266176 | pl_comp.cpp  | 2362 | 6072 |  14584
      16717 | GLC_FUNC_public_proc | invalItems | addUser: false, schemas: 2200 | 303465209266176 | NA           |    0 |    0 |  14584
      16717 | GLC_FUNC_public_proc | exprlist   | addUser: false, schemas: 2200 | 303465209266176 | list.cpp     |  110 |  320 |  14584
      16717 | GLC_FUNC_public_proc | StmtBlock  | addUser: false, schemas: 2200 | 303465209266176 | pl_gram.cpp  |  696 |  176 |  14584
      16717 | GLC_FUNC_public_proc | namespace  | addUser: false, schemas: 2200 | 303465209266176 | pl_funcs.cpp |  229 | 1152 |  14584
(6 rows)