Question

在Oracle PL / SQL中，我想测试睡眠功能。我正在使用hr架构。但它给了我错误：

PLS-00201: identifier 'DBMS_LOCK' must be declared

代码：

begin
 DBMS_LOCK.Sleep( 60 );
end;
/

Answer 1

您应该将grant execute打包到您的架构

grant execute on <object> to <user>;

e.g。

connect as sys
grant execute on SYS.DBMS_LOCK to someuser;

Answer 2

如果您无权访问sys或dba不愿意这样做

   GRANT EXECUTE on SYS.DBMS_LOCK to you;

您可以在数据库中创建Java过程：

   CREATE OR REPLACE PROCEDURE SLEEPIMPL (P_MILLI_SECONDS IN NUMBER) 
   AS LANGUAGE JAVA NAME 'java.lang.Thread.sleep(long)';

并创建一个函数，该函数调用java存储过程

 CREATE OR REPLACE FUNCTION sleep (
    seconds IN NUMBER
   ) RETURN NUMBER
   AS
   BEGIN
     SLEEPIMPL( seconds );
     RETURN seconds;
   END;

在

之后

GRANT EXECUTE ON sleep TO public;

您可以通过选择

拨打电话

select sleep(6000) from dual