Home Database Mysql Tutorial Oracle中重新编译无效的存储过程, 或函数、触发器等对象

Oracle中重新编译无效的存储过程, 或函数、触发器等对象

Jun 07, 2016 pm 04:53 PM

Oracle 中的存储过程在有些情况下会变成失效状态,在 PL/SQL Developer 中该存储过程的图标左上角显示一把小红叉叉。比如储过程所

Oracle 中的存储过程在有些情况下会变成失效状态,在 PL/SQL Developer 中该存储过程的图标左上角显示一把小红叉叉。比如储过程所引用的对象失效,dblink 出问题啦都可能引起用到它的存储过程失效。再就我的存储过程经常会变成无效,至今原因都未查明。

查询 dba_dependencies 视图可以看到存储过程所引用的对象,再就在 dba_objects 视图中可以看到对象的 created 和 last_ddl_time 时间。

上面的那种无效的存储程,只要不是语法上有问题,重新编译一下又是可用的了。总不能每次发现时人工去编译的,所以要实现自动化,有以下两种方法(网上找到的所有的 在Oracle中重新编译所有无效的存储过程 代码排版都很混乱,所以主要是重新整理了):

1. Oracle SQL *Plus 中 —— 用 spool 生成脚本文件,然后 @ 调入执行,代码如下:

spool ExecCompProc.sql

select 'alter procedure '||object_name||' compile;' from all_objects

where status = 'INVALID' and object_type = 'PROCEDURE' AND owner='UNMI';

spool off

@ExecCompProc.sql;

2. 写成一个存储过程 —— 让这个存储过程在某个时机执行,比如  Job 中,代码如下:

create or replace procedure compile_invalid_procedures(

p_owner varchar2 -- 所有者名称,,即 SCHEMA

) as

--编译某个用户下的无效存储过程

str_sql varchar2(200);

begin

for invalid_procedures in (select object_name from all_objects

where status = 'INVALID' and object_type = 'PROCEDURE' and owner=upper(p_owner))

loop

str_sql := 'alter procedure ' ||invalid_procedures.object_name || ' compile';

begin

execute immediate str_sql;

exception

--When Others Then Null;

when OTHERS Then

dbms_output.put_line(sqlerrm);

end;

end loop;

end;

在 SQL *Plus 中执行该存储过程时,如果要看到 dbms_output.put_line(sqlerrm); 的输出,需要执行 set serverout on 打开输出。

这里述及的是如何重新编译存储过程,依次推及到,重新编译 FUNCTION、PACKAGE、TYPE、TRIGGER 等,和重建 INDEX 等。所不同的就是查询 all_objects 时的  object_type 不一样,还有要执行的 alter 语句不一样。

object_type 有哪些可用 select distinct object_type from all_objects 获取到;alter 的语句写法参考下面:

alter function function_name compile;

alter package package)name compile;

alter type type_name compile;

alter index index_name rebuild;

--等等............

补充,请看这里:

1. 其实存储过程、函数等是 INVALID,只要内容无错误就不要紧,因为执行的时候会自动重新编译

2. 在 SQL *Plus 或者 PL/SQL Developer 的 Command Windows 中用 show  errors  procedure  procedure_name 或 show errors function function_name 可以查看到存储过程具体错误

3. 可以用 Oracle 提供的工具:dbms_utility.compile_schema(schema varchar2, compile_all boolean default TRUE); 来编译某个 Schema 下的所有 PROCEDURE、FUNCTION、PACKAGE 和 TRIGGER.比如执行 dbms_utility.compile_schema('Unmi')。

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