Re: DDL alter in execute immediate pl/sql procedure

From: Stephane Faroult <sfaroult_at_oriole.com>
Date: Fri, 28 Dec 2001 13:34:24 -0800
Message-ID: <F001.003E3F10.20011228131019@fatcity.com>

> "Hagedorn, Linda" wrote:
>
> If someone has a few minutes to read through this, I'd be most
> appreciative. I could use a second set of eyes looking this over.
>
> This procedure is designed to maintain a table/sequence map, executed
> after an import and increment any sequences which have a lower nextval
> that the max value in the column it's supposed to be matching. Often
> the sequences are out-of-sync after an import (even full=y and
> direct=y) and we have to manually adjust them. This is an effort to
> automate the process.
>
> These are the displays and error from the procedure, and the code
> follows. The problem is in the execute immediate which is doing DDL.
> It's Oracle 8.1.7 on Solaris so DDL in execute immediate alter is
> supposed to work. The execute immediate insert does work.
>
> Any suggestions or comments are welcome. Thanks, Linda
>

Linda,

DDL is forbidden in PL/SQL - except in some EXECUTE IMMEDIATE statement (or when using the older DBMS_SQL package) but as a SINGLE statement. When you are executing your statement you are trying to execute an anonymous block - which happens to contain a DDL statement, which is forbidden in PL/SQL (sorry, looping). I have never tried it but there is no reason why it shouldn't work, an EXECUTE IMMEDIATE within the EXECUTE IMMEDIATE is probably what you shoud try, i. e. something like :

my_statement := 'begin' || chr(10) || 'execute immediate ''' || 'fancy DDL here'

                           || '''; end;';

execute immediate :my_statement;

Another solution would be to simplify the logic, but I am in Europe and currently a bit tired to suggest something reasonably intelligent.

-- 
Regards,

Stephane Faroult
Oriole Ltd
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Received on Fri Dec 28 2001 - 15:34:24 CST

Re: DDL alter in execute immediate pl/sql procedure - dynamic sql