OnLine and Tuxedo (clarification)
Posted in 1993
Someone called me to task, via email, on my response to the question about Tuxedo and OnLine, where I stated that TP/XA was required for 2 phase commit. Let me clarify that OnLine 5.0 has 2PC for homogeneous OnLine transactions, i.e. if you are using a regular front end (DBaccess, ESQL, 4GL, etc) you can do a 2PC in an OnLIne/I-Star environment. When you start using Tuxedo, regardless of what client product you use (4GL does have a library that supports Tuxedo calls: 4GL TP Toolkit), you then need to add TP/XA in order to get 2PC *via Tuxedo*. OnLine, by iteself (i.e. w/o TP/XA) will not support a *Tuxedo* global (i.e. distributed) transaction. You *CAN* use Tuxedo and OnLine w/o TP/XA if your transaction does not need to be a Tuxedo global transaction across multiple RMs. This should either clarify the situation, or hopelessly confuse it! Dave -- Disclaimer: These opinions are not those of Informix Software, Inc. ************************************************************************** "I look back with some satisfaction on what an idiot I was when I was 25, but when I do that, I'm assuming I'm no longer an idiot." - Andy Rooney