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...
*/ ConditionVariablePrepareToSleep(&CheckpointerShmem->done_cv);//等待ckpt_done >= new_start for (;;) { int new_done; SpinLockAcquire(&CheckpointerShmem->ckpt_lck); new_done = CheckpointerShmem->ckpt_done; new_failed = CheckpointerShmem->ckpt_failed; SpinLockRelease(&CheckpointerShmem->ck...
postgres | Superuser, Create role, Create DB, Replication, Bypass RLS | {} 创建另外一个管理员用户。 postgres=#createuseradmin2withpassword'123.com';CREATEROLE postgres=#alteruseradmin2withsuperuser;ALTERROLE pg数据库中的用户表和角色表 postgres=#select*frompg_user; usename|usesysid|usecreatedb|u...
3.6删除slot 在slot处于活跃状态的时候是不能被删除的,首先需要在从库中将配置参数primary_slot_name 去掉,并重启,使其活跃状态失效。 aubu=# select pg_drop_replication_slot('slot49'); pg_drop_replication_slot --- (1 row) select * from pg_replication_slots ; slot_name | plugin | slot_type |...
问题2:PSQLException: ERROR: all replication slots are in use Hint: Free one or increasemax_replication_slots. 这个是因为频繁修改 'debezium.slot.name' = 'pg2topic_ump_ano2_rework_onepage' 每次修改后上线任务,都会在库里记录一个slot文件。这个文件记录对应的任务读到WAL日志的哪一行。配置文件中,有...
此时可以通过启用max_replication_slots参数启用复制槽来解决此问题。 primary端实例会一直保留预写日志(WAL)文件,直到所有备库所需的插槽都确认已接收到特定段为止。只有完成此操作后,主库实例才会移除相应的WAL文件。 主库端复制槽要和从库数量对应,我这里有2个从库,创建2个复制槽: cndba=# select * from pg_...
max_replication_slots The maximum number of replication slots that are allowed to stream WAL changes 1 (if Airbyte is the only service reading subscribing to WAL changes. More than 1 if other services are also reading from the WAL)AWS Postgres RDS or AuroraGo to the Configuration tab for...
postgres=# SELECT * FROM pg_replication_slots;(0 rows)复制代码 postgres=# \x Expanded display ...
此时再次执行check可以看到状态都正常了: [root@barman barman.d]# barman check pgsql_streaming Server pgsql_streaming: PostgreSQL: OK superuser or standard user with backup privileges: OK PostgreSQL streaming: OK wal_level: OK replication slot: OK ...
Unused replication slots A replication slot in Postgres stores information required by a replica to catch up with the primary. If the replica is down, or severely behind, the rows in the replication slot can’t be vacuumed on the primary. ...