On 06/10/17 12:16, Konstantin Knizhnik wrote: > When creating logical replication slots we quite often get the following > error: > > ERROR: cannot build an initial slot snapshot when MyPgXact->xmin > already is valid > > which cause restart of WAL sender. > The comment to this line doesn't clarify much: > > /* so we don't overwrite the existing value */ > if (TransactionIdIsValid(MyPgXact->xmin)) > elog(ERROR, "cannot build an initial slot snapshot when > MyPgXact->xmin already is valid"); >> > I wonder if it is normal situation or something goes wrong? >
Hi, no it's not normal situation, it seems you are doing something that assigns xid before you run the CREATE_REPLICATION_SLOT command on that connection. -- Petr Jelinek http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
