Home  >  Article  >  Database  >  Oracle存储过程本地编译方式

Oracle存储过程本地编译方式

WBOY
WBOYOriginal
2016-06-07 17:36:121351browse

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: SQLgt; create table t1(rid number); Table created SQLgt; c

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

linux

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn