Online 4.1 shared memory initialization

Problem using Informix-Online 4.1 When I try to start isql I get the following error messages: -529 Cannot attach to shared memory. Your application program is unable to initialize its connection to the database engine because you are using a shared-memory implementation and either: (1) the database shared memory has not been initialized, or (2) the maximum number of users has already started using the system. Check the accompanying ISAM error code for more information. -123 ISAM error: no shared memory This implementation of ISAM uses shared memory; however, the shared memory partition has not been established. Contact the system administrator or the person who installed the product. This seems to be a problem solved easily, but 1) on call of tbinit you get the message: shared memory already initialized 2) there are no users connected. Has anybody out there any opinions ? Thank's in advance /* Juergen Roberg | Tel. work : (030) 4607-3135 | privat : (030) 3445384 Siemens Nixdorf | Software Engineering | GmbH | Email USA : roberg.bln@sni-usa.com Gustav-Meyer-Allee 1 | !USA : roberg.bln@sni.de D-1000 Berlin 65 | */