PostgreSQL streaming physical replication with slots simplifies setup and maintenance procedures. Usually, you should estimate disk usage for the Write Ahead Log (WAL) and provide appropriate limitation to the number of segments and setup of the WAL archive procedure. In this article, you will see ... postgresql - How to delete replication slot in postgres 9 ... How to delete replication slot in postgres 9.4. ... The replication slot must be inactive, i.e. no active connections. So if there's a streaming replica using the slot you must stop the streaming replica. ... Browse other questions tagged postgresql replication postgresql-9.4 or ask your own question. asked. 3 years, 10 months ago ... PostgreSQL 9.4 new feature: Replication slots-云栖社区-阿里云 PostgreSQL 9.4 新增的一个特写, replication slot, 1. 可以被流复制的sender节点用于自动识别它xlog中的数据在下面的standby中是否还需要(例如, standby断开连接后, 还未接收到的XLOG), 如果还需要的话, 那么这些XLOG将不会被删除. Physical and Logical replication API - PostgreSQL
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Setting it to a lower value than the number of currently existing replication slots will prevent the server from starting. wal_keep_segments (integer) Specifies the minimum number of past log file segments kept in the pg_xlog directory, in case a standby server needs to fetch them for streaming replication. Each segment is normally 16 megabytes. postgresql 9.4 streaming replication - Stack Overflow I have the following problem: i am trying to set up a streaming replication scenario with load balancing. I read various tutorials but i cannot find the mistake. The replication does not work. I do not have a "wal sender/receiver process". The archiving works and everytime the master restarts, the archived wal files are copied to the slave. PostgreSQL Replication Slots - OpsDash PostgreSQL 9.4 and later come with a feature called “replication slots”. They can be used to make WAL archiving and streaming replication more robust … PostgreSQL Streaming Physical Replication With Slots
The PostgreSQL Global Development Group announced that the first beta release of PostgreSQL 9.4, the latest version of the world's leading open source database, is available today.
I am using Postgres 9.4 on Windows 2008 server. There are three such instances that I am using. One as master and the rest of the two are slave/standby. The version of Postgres is 9.4 in all the three instances. I have set up replication using physical slot. But the replication is not working. PostgreSQL: Documentation: 9.4: Streaming Replication Protocol 49.3. Streaming Replication Protocol. To initiate streaming replication, the frontend sends the replication parameter in the startup message. A Boolean value of true tells the backend to go into walsender mode, wherein a small set of replication commands can be issued instead of SQL statements. Only the simple query protocol can be used in walsender mode.
PostgreSQL provides infrastructure to stream the modifications performed via SQL to external consumers. This functionality can be used for a variety of purposes, including replication solutions and auditing.
pg_replication_slots The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. For more on replication slots, see Section 25.2.6 and Chapter 46 . postgresql - How to delete replication slot in postgres 9 ... The replication slot must be inactive, i.e. no active connections. So if there's a streaming replica using the slot you must stop the streaming replica. Or you can change its recovery.conf so it doesn't use a slot anymore and restart it. postgresql 9.4 streaming replication - Stack Overflow
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PostgreSQL: Documentation: 10: pg_receivewal 14th February 2019: PostgreSQL 11.2, 10.7, 9.6.12, 9.5.16, and 9.4.21 Released! GitHub - sizmek-public/wdacom-repmgr: Legacy public repo repmgr…
Postgres 9.4 feature highlight - Physical slots for ... Michael Paquier - PostgreSQL hacker. Replication slots is a new feature of PostgreSQL 9.4 that has been introduced by this commit: commit 858ec11858a914d4c380971985709b6d6b7dd6fc Author: Robert Haas