On 2011-08-12, at 03:58 , jenopob wrote: > > I do some db falt tests > 1)the test code run always connect pgpool, > 2)test master or slave go down > > but when mster or slave go down ,java code throws exception : > > org.postgresql.util.PSQLException: An I/O error occurred while sending to > the backend > org.postgresql.util.PSQLException: The connection attempt failed. > > the error happened once for little time,then goes normal. > > what should I do to solve this problem?and show the reason about the matter. I do not know much about pgpool but it sounds to me like the TCP connection is broken, and threads die and new threads make new connections they start working again. If I understand you correctly, you need to write code that detects this IOException and then retries the connection attempt and re-execute the query. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
