Using persistent connection to database

Hi to everybody, first sorry for my poor english. im trying to use persistents connections to an Oracle Database through PHP, for manageing transactions, and have some problems. My Schema: * Web Server: Apache 1.3.20 on a Linux RedHat 7.0 * PHP: 4.0.6 compiled with oracle module functions (ora_*) * Data Base: Oracle 8.0.5 on a Windows NT Server I need to manage transactions to database. For it i made a test pages like this: 1 index paga that generate some frames and open a persistent connection to the database 1 frame that made an insert to one table of the database 1 frame that made an insert to another table of the same databese 1 frame with 2 buttons, one for execute a Commit and another for execture a Rollback Some times works well, but other times not work correctly... What im doing wrong? Can somebody help me? Avanced thanks