I'm facing one serious problem in Oracle7.1 running in SCO platform.

User is accessing the database through his application very fine upto yesterday.

All of a sudden today , if one particular voucher entry form is clicked, the it is disconnected from the database and huge 300 MB core is dumped into the server? And this is happening only for this menu.!! and that to today!!

And each time when the menu is invoked a core file is dumped into the server for each access.

There were no application changes also.

What is the problem? As a DBA I checked the oracle database parameters and found to be fine. And no changes made to them shortly.

Also the same application when connected to different server running in oracle 8i it is working fine for that voucher entry menu.

I'm struggling to identify the problem.

Could any one throw some lights on this.

Most urgent........