[postgres@localhost data]$ pg_ctl -D $PGDATA start 在主库上验证slot工作状态 [postgres@localhost pg952]$ psql -h 192.168.230.128 -p 5432 -U postgres psql (9.5.2) Type "help" for help. postgres=# \x Expanded display is on. postgres=# select * from pg_replication_slots; -[ RECORD ...
[postgres@localhost data]$ pg_ctl -D $PGDATA start 在主库上验证slot工作状态 [postgres@localhost pg952]$ psql -h 192.168.230.128 -p 5432 -U postgres psql (9.5.2) Type "help" for help. postgres=# \x Expanded display is on. postgres=# select * from pg_replication_slots; -[ RECORD ...
Let’s try doing streaming replication using slots. First, let’s create another slot: postgres=# select pg_create_physical_replication_slot('slot2', true); pg_create_physical_replication_slot --- (slot2,0/30000028) (1 row) postgres=# select redo_lsn from pg_control_checkpoint(); redo_...
The replicationSlots stanza explicitly enables support for physical failover slots. Another exciting setting (requiring PostgreSQL 13 or above) is the max_slot_wal_keep_size parameter in the PostgreSQL configuration: it is set to 500MB, which instructs Postgres to invalidate a replication slot that...
When shutting down Electric, sometimes we'll want to cleanup replication slots in Postgres. E.g. a PR environment where Electric is spun up for some tests and then shut down again. Perhaps this is an environment variable?CLEANUP_REPLICATION_SLOTS_ON_SHUTDOWN...
为了清理 PostgreSQL 并释放一个槽或者增大 max_replication_slots 的值,你可以按照以下步骤进行操作: 1. 检查当前 PostgreSQL 的 max_replication_slots 设置值 首先,你需要检查当前 PostgreSQL 数据库的 max_replication_slots 设置值。这可以通过查询系统视图或使用 SHOW 命令来完成。 sql SHOW max_replication_slots...
postgres=# checkpoint; CHECKPOINT postgres=# select * from pg_replication_slots; slot_name | plugin | slot_type | datoid | database | temporary | active | active_pid | xmin | catalog_xmin | restart_lsn | confirmed_flush_lsn | wal_status | safe_wal_size | two_phase ...
With the introduction of PostgreSQL 9.4, a more sophisticated solution to the problem of deleted XLOG has been introduced—physical replication slots. As already outlined earlier in this book, replication slots make sure that the master deletes XLOG only when it has been safely consumed by the ...
“HINT: Close open transactions soon to avoid wraparound problems. You might also need to commit or roll back old prepared transactions, or drop stale replication slots.”“WARNING: oldest xmin is far in the past.” 您可以手动删除Replication Slot来让RDS PostgreSQL内核自动清理WAL日志、旧版本数据...
I'm currently thinking of trying to reindex my catalog tables as this system has been upgraded through many versions of Postgres (other tables have been reindexed). Maybe old indexes could be related as theorized in comments above. Interestingly the only query that has been getting canceled is ...