遇到一个问题，如下：
ETL@RACTEST> begin
  2  DBMS_LOCK.sleep(1);
  3  end;
  4  /

PL/SQL procedure successfully completed.

但是
ETL@RACTEST> CREATE OR REPLACE PROCEDURE etl.pliutest
  2  authid current_user
  3  AS
  4  BEGIN
  5     DBMS_LOCK.sleep(1);
  6  END;
  7  /


Warning: Procedure created with compilation errors.

Elapsed: 00:00:00.07
ETL@RACTEST> ETL@RACTEST> show errors
Errors for PROCEDURE ETL.PLIUTEST:

LINE/COL ERROR
-------- -----------------------------
5/2      PL/SQL: Statement ignored
5/2      PLS-00201: identifier 'DBMS_LOCK' must be declared

同一个包，在相同的用户下的匿名程序块中可以执行，但是在存储过程中却没有权限执行，查了下资料，一些DBMS_开头的pkg在pl/sql中用到的时候，需要显示的执行
grant execute on dbms_xxxx to xxx 来赋下权限才可以。此外这个授权system用户是没有权限的，要sys 或者plsql / as dba登录才有权限授权。
授权以后可以看到：
SYSTEM@RACTEST> select grantee,owner,table_name,grantor,privilege from dba_tab_privs where table_name like 'DBMS_LOCK';

GRANTEE                                  OWNER      TABLE_NAME       GRANTOR     PRIVILEGE
--------------------                    ----------           ----------            ----------           ----------
EXECUTE_CATALOG_ROLE                       SYS              DBMS_LOCK          SYS             EXECUTE
DMSYS                                    SYS               DBMS_LOCK         SYS             EXECUTE
CTXSYS                                   SYS               DBMS_LOCK         SYS             EXECUTE
EXFSYS                                   SYS               DBMS_LOCK         SYS             EXECUTE
MDSYS                                    SYS               DBMS_LOCK         SYS             EXECUTE
OLAPSYS                                SYS                DBMS_LOCK        SYS             EXECUTE
SYSMAN                                  SYS               DBMS_LOCK         SYS             EXECUTE
ETL                                         SYS               DBMS_LOCK         SYS             EXECUTE

8 rows selected.

然后再次执行：
SYSTEM@RACTEST> CREATE OR REPLACE PROCEDURE etl.pliutest
  2  authid current_user
  3  AS
  4  BEGIN
  5     DBMS_LOCK.sleep(1);
  6  END;
  7  /


Procedure created.

OK了！

?转自：http://blog.sina.com.cn/s/blog_6ff05a2c0100mico.html