Hi, The manual mentions that SERIALIZABLE transactions may abort with error 40001, in which case the client application is supposed to retry the transaction. I've been stress testing an application by issuing lots of concurrent requests, and sure enough, every now and then I get back those 40001 errors. However, sometimes I also get back error 40P01. It seems no ill comes to pass if I also retry those transactions, but since this error code is not explicitly mentioned in the manual, one question arises: which error codes can be considered "normal" (in the sense it's reasonable for the client to retry) when issuing SERIALIZABLE transactions, and which ones (within the scope of class 40, of course) are to be considered real errors? Thanks in advance! Best, Jon -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general