oracle - DBMS_UTILITY.COMPILE_SCHEMA(schema => '<SCHEMA_NAME>' ,compile_all => FALSE) 不编译无效的包体

Question

呼唤

BEGIN
    DBMS_UTILITY.COMPILE_SCHEMA(schema => '<SCHEMA_NAME>', compile_all => FALSE);
END;
/

不编译无效的包体。有谁知道原因吗？

(Oracle Database 11g 企业版版本 11.2.0.1.0 - 生产)

Answer 1

确实如此；至少在 11.2.0.3 中是这样，所以我认为基础版本中可能存在错误。

如果我创建了一个无效的包，在本例中是因为它引用了一个不存在的表:

create package p42 as
  procedure test;
end p42;
/

PACKAGE P42 compiled

create package body p42 as
  procedure test is
    n number;
  begin
    select count(*) into n from t42;
  end test;
end p42;
/

PACKAGE BODY P42 compiled
Errors: check compiler log

然后检查状态和上次 DDL 时间:

select object_type, object_name, status, last_ddl_time
from user_objects where object_name = 'P42'
order by object_type, object_name;

OBJECT_TYPE         OBJECT_NAME          STATUS  LAST_DDL_TIME      
------------------- -------------------- ------- -------------------
PACKAGE             P42                  VALID   2015-03-02 17:39:42 
PACKAGE BODY        P42                  INVALID 2015-03-02 17:39:42 

然后重新编译架构并再次检查:

BEGIN
    DBMS_UTILITY.COMPILE_SCHEMA(schema => USER, compile_all => FALSE);
END;
/

anonymous block completed

select object_type, object_name, status, last_ddl_time
from user_objects where object_name = 'P42'
order by object_type, object_name;

OBJECT_TYPE         OBJECT_NAME          STATUS  LAST_DDL_TIME      
------------------- -------------------- ------- -------------------
PACKAGE             P42                  VALID   2015-03-02 17:39:42 
PACKAGE BODY        P42                  INVALID 2015-03-02 17:39:49 

..最后的DDL时间改变了，所以重新编译了。它仍然无效，因为我还没有解决根本问题。我可以看到

select text from user_errors where name = 'P42';

TEXT                                                        
------------------------------------------------------------
PL/SQL: ORA-00942: table or view does not exist              
PL/SQL: SQL Statement ignored                                

或者如果您的 '<SCHEMA_NAME>'不是您当前的用户，它将位于 all_errors ，如果仍然无效。

如果我创建丢失的表并再次编译架构:

create table t42 (id number);

Table t42 created.

BEGIN
    DBMS_UTILITY.COMPILE_SCHEMA(schema => USER, compile_all => FALSE);
END;
/

anonymous block completed

select object_type, object_name, status, last_ddl_time
from user_objects where object_name = 'P42'
order by object_type, object_name;

OBJECT_TYPE         OBJECT_NAME          STATUS  LAST_DDL_TIME      
------------------- -------------------- ------- -------------------
PACKAGE             P42                  VALID   2015-03-02 17:39:42 
PACKAGE BODY        P42                  VALID   2015-03-02 17:40:11 

...上次 DDL 时间再次更改，现在的状态也更改了。如果我再次编译，用你的compile_all => FALSE标志，那么最后一个 DDL 时间不会改变，因为它不会查看有效的包。