2pc (two phase commit) requires a DBMS with functionality to support both phases, the voting (preparation) phase and the decision phase.
2pc also requires a TPM (a Transaction Processing Monitor) such as MS-DTC or CICS or WebSphere/MQ. As far as I know, the u2 databases and some other Pick-like databases do support some TPM connectivity, but are currently lacking the full functionality required for the phases of 2pc. There are some well-known problems with 2pc and with various TPM products, but some applications (electronic money transfer, for example) really require 2pc and TPM. Avoid them if you can; use them if you must. -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users
