通常将oracle存储过程编译为本地编译方式的测试记录.
测试用表:
sql> create table t1(rid number);
table created
sql> create table t_n(rid number);
table created
测试用的存储过程:
create or replace procedure pro_xcl(p1 varchar2)
is
begin
dbms_output.put_line(p1);
insert into t1 select rownum as rr
from dual connect by rownum commit;
exception
when others then
dbms_output.put_line(sqlcode||' : '||substr(sqlerrm,200));
end;
测试:
sql> set serveroutput on
sql> set timing on
--查看存储过程当前编译方式
sql> select plsql_code_type from all_plsql_object_settings where;
plsql_code_type
--------------------------------------------------------------------------------
interpreted
executed in 0.14 seconds
sql> exec pro_xcl('11g interpreted');
11g interpreted
pl/sql procedure successfully completed
executed in 4.68 seconds
更改下，pro_xcl，将t1换成t_n表。
测试本地编译方式出来的存储过程运行速度.
-- 用本地编译方式编译存储过程pro_xcl
sql> alter procedure pro_xcl compile plsql_code_type=native;
procedure altered
executed in 0.062 seconds
--查看存储过程当前编译方式,可看到，已变成本地编译方式了
sql> select plsql_code_type from all_plsql_object_settings where;
plsql_code_type
--------------------------------------------------------------------------------
native
executed in 0.063 seconds
sql> exec pro_xcl('11g native');
11g native
pl/sql procedure successfully completed
executed in 4.087 seconds
本地编译方式要快0.6秒，没有快到想象的夸张的地步。
设置当前session程序编译方式默认为本地编译:
alter session set plsql_code_type=native;
设置数据库默认程序为本地编译方式:
alter system set plsql_code_type=native;
与plsql编译相关一些参数：
sql> show parameter plsql
name type value
------------------------------------ ----------- ------------------------------
plsql_ccflags string
plsql_code_type string interpreted
plsql_debug boolean false
plsql_optimize_level integer 2
plsql_v2_compatibility boolean false
plsql_warnings string disable:all
，