ONTAPE to disk for DBSPACES larger than 2 GB

I am trying to perform Level 0 archives using ONTAPE to disk. I have set the "tapesize" parameter in ONCONFIG to be very large (10 GB). I have made the AIX file system to which the archive is being written a "Large JFS" file system and I have tested via AIX that I can create a file larger than 2 GB. But every time I attempt to do an ONTAPE level 0 archive, I get an error message from ONTAPE indicating that it can't create the file (error 27) after creating a file on disk that is 1 byte smaller than 2 GB. I am running AIX 4.2.1 and Informix IDS 7.24.UC3. I even received from informix Tech Support a special release of the ONTAPE command which was supposed to fix this problem and which was not included in 7.24.UC3 by accident. Has anyone seen this before and have a suggestion on how to get Informix to break this 2 GB barrier for ONTAPE backups to disk? I am also pursuing this through Informix Tech Support. Any advice would be greatly appreciated. Thanks in advance. John Lucker CIGNA Reinsurance John.Lucker@CIGNA.COM