2 phase commit with FDW

Hi!

I am getting the following error when trying to PREPARE transaction which updates both local and foreign table:

2/17/22 12:48:00:657 EST] 00000128 RegisteredRes E   WTRN0046E: An attempt by 
the transaction manager to call prepare on a transactional resource has resulted in an error. The error code was XAER_RMFAIL. The exception stack trace follows: org.postgresql.xa.PGXAException: Error preparing 
transaction. prepare xid={XidImpl: formatId(57415344), gtrid_length(36), bqual_length(54),

data(0000017f08cc3aea00000001232c3afce8abf609478378ca6ac9d4bddbfea3e4efa55cf30000017f08cc3aea00000001232c3afce8abf609478378ca6ac9d4bddbfea3e4efa55cf3000000010000000000000000000000000002)}

        at org.postgresql.xa.PGXAConnection.prepare(PGXAConnection.java:365)

There are no errors is all the tables are local. It seems that postgres_fdw is incompatible with the XA protocol. Is there a way around it? If not, we will need yet another code change and another data source.

Regards

-- 
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
https://dbwhisperer.wordpress.com