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...
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 |...
PostgreSQL must wait until all client replication slots are acknowledged before the slots can be deleted. Consequently, if a client does not acknowledge any change events for a long period of time, PostgreSQL will retain the changed event. Over time, this can result in the WAL growing too ...
修改日志格式位csv格式 # 查看日志输出位置变量postgres=# show log_destination;# vi postgresql.conflog_destination ='csvlog'logging_collector = on log_directory ='log'log_filename ='postgresql-%Y-%m-%d_%H%M%S.log'# 热加载配置pg_ctl reload pg_ctl 管理数据库实例 ~]$ pg_ctl --helppg_ctl i...
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_...
select pg_xlog_location_diff(pg_current_xlog_location(),restart_lsn), * from pg_replication_slots; "建议: " " 如果restart_lsn和当前XLOG相差非常大的字节数, 需要排查slot的订阅者是否能正常接收XLOG, 或者订阅者是否正常. 长时间不将slot的数据取走, pg_xlog目录可能会撑爆. " ...
Logical slots: tracking the causes of replication conflicts pg_basebackup -R: dbname in primary_conninfo Synchronization of logical replication slots between the primary server and replicas Logical decoding optimization for subtransactions Client applications libpq: non-locking query cancellation libpq: direct...
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...
the lost replication slots by copying WAL files from archive location. The current code is throwing an error that the slot is lost because the restart_lsn is set to invalid LSN when the WAL is truncated by checkpointer. In order to build an external service that can revive a lost slot, ...
Transcript Vacuuming dead tuples not yet removable in Postgres When vacuum doesn’t remove dead rows from a table 1) Long running transactions 2) Replication slots 3) Prepared transactions What we have discussed in this episode of…Continue reading 5mins of Postgres E6: Optimizing Postgres Text ...