> Ok thank you, > > I have promoted slave server as master in postgres streaming replication , howerver application is working fine after promotion , but getting some error messages in the postgres log (slave which promoted to master) > > what does it mean? > > <tag> >>ERROR: could not obtain lock on row in relation "main_instance" > < 2017-09-05 13:08:45.434 UTC >STATEMENT: SELECT "main_instance"."id", "main_instance"."uuid", "main_instance"."hostname", "main_instance"."created", "main_instance"."modified", "main_instance"."version", "main_instance"."capacity" FROM "main_instance" LIMIT 1 FOR UPDATE NOWAIT Your session (transction) tried to get a row lock on the row but other session (transaction) has already gotten the row lock on the same row. Best regards, -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese:http://www.sraoss.co.jp -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
