Hi all, *masterdb01 -> slave01 -> slave02 -> slave03*
*testmaster01 (Full copy from masterdb01)* I'm trying to refresh my main DB, by running this command on my test server: ssh postgres@slave02 "/usr/pgsql-9.2/bin/pg_dump > --exclude-table-data='junk.*' --format=custom master_db_name" | > /usr/pgsql-9.2/bin/pg_restore --dbname=master_db_name_temp --exit-on-error But, I got the following error after few seconds: pg_dump: Dumping the contents of table "invoices" failed: PQgetResult() > failed. > pg_dump: Error message from server: ERROR: canceling statement due to > conflict with recovery > DETAIL: User was holding a relation lock for too long. > pg_dump: The command was: COPY dm.invoices (invoice_id, format_version, > ts_issue, ts_ack, customer_id, code, tag, account_data, customer_data, > invoice_data, invoice_items_data) TO stdout; If I run the pg_dump from the MASTER DB, it runs ok. But as the DB is 2 TB, I just can't let it coping from Production. It has to be from a slave server (I've also tried to copy from another slave. I get the same error). What am I doing wrong? How can I solve the problem? * I've sent the same e-mail to pgsql-admin Thanks; Lucas