Not in Transaction Error Message -255

I am working with online 6.0 version on HP 9000 platform. The database uses unbuffered transaction logging. The 4gl program gives -255 error message when I am trying to open a cursor that is defined for UPDATE. Here is a test program. PREPARE updt_stmt FROM SELECT * FROM T WHERE ROWID = ? FOR UPDATEDECLARE upd_curs CURSOR FOR updt_stmt OPEN upd_curs USING ROWID I need to convert applications written for SE to work with ONLINE using COMPILER. The SE uses NO Transaction logging. The ONLINE uses UNBUFFERED TRANSACTION LOGGING. What choices do I have? If I use BEGIN WORK before OPEN statement then it works fine. According to Informix I don't need to re-write all my application. Please advise. Ruchi My e-mail address is Patel_Ruchi@avid.com