dmp file error

Hi,

While logging in with user Code and Password the dmp file is getting created.unable to log in.

I have created new users for the same and made them to work but now the error persists for other users.

There are 24 users.Now i created 3 users extra because of this error.

But it is coming for other users how to deal with this.

Please help

Thank You

Md.nazeer Shaikh