APEX

Hi,
After changing the ip adress on the server, we had some problems with starting up opmnct.
After changing the host file this could be started up again.
Now apex does not work for some reason
I found invalid objects in the database and when I recompiled I get PLS-00753: malformed or corrupted wrapped unit

I found some thread where people advice to reinstall apex

I did an upgrade from 3.1.1 to 3.1.2 with patch p7313609_111060_GENERIC.zip
But still no solution
Errors are
86/5 PL/SQL: Statement ignored
86/5 PLS-00201: identifier 'SYS.WWV_DBMS_SQL' must be declared

Recompile does not work


We found in metalink a case where is told not to compile remotly with toad but execute the script localy with sqlplus.
We tried that but this does not help.

Is there a way to reinstall apex without loosing the applications that I created?

Reinstalling apex (remove script and than install again) drops the FLOWXX schema I suppose...

Regards Jules