Sybase ASE server request logs

Your DB files are SQLAnywhere files, so first you will need to get SQLAnywhere. Sybase has some documentation on upgrading databases from earlier versions here.

Instead of using double-quotes, try using single-quotes:

DELETE 
FROM LOGIN 
WHERE login = '336959686@login.com';

If the delete statement produces no error but doesn't appear to delete the row affected, that means one of the following:

1. The criteria (the WHERE clause) is not matching the desired row.

2. You have a transaction that is rolling back the delete, or has not yet committed the delete. Check the transaction chaining mode using SELECT @@tranchained; Perhaps try this:

   SELECT *
   FROM LOGIN 
   WHERE login = '336959686@login.com';
   BEGIN TRANSACTION
   DELETE 
   FROM LOGIN 
   WHERE login = '336959686@login.com';
   COMMIT TRANSACTION
   SELECT *
   FROM LOGIN 
   WHERE login = '336959686@login.com';
   

3. Undetected database corruption - this is extremely rare. Have you performed DBCC CHECKDB lately? Make certain you have a reliable backup. Test the backup by restoring it onto another instance of Sybase ASE. If you have done that, running DBCC CHECKDB should be performed. It may heavily impact I/O, so I would run it during non-peak hours.