Contents
Why do I need to turn off fsync in PostgreSQL?
This ensures that the database cluster can recover to a consistent state after an operating system or hardware crash. While turning off fsync is often a performance benefit, this can result in unrecoverable data corruption in the event of a power failure or system crash.
Where to turn off synchronous _ commit in PostgreSQL?
In many situations, turning off synchronous_commit for noncritical transactions can provide much of the potential performance benefit of turning off fsync, without the attendant risks of data corruption. fsync can only be set in the postgresql.conf file or on the server command line.
Is it safe to turn off fsync during a power failure?
While turning off fsync is often a performance benefit, this can result in unrecoverable data corruption in the event of a power failure or system crash. Thus it is only advisable to turn off fsync if you can easily recreate your entire database from external data.
What causes data loss in PostgreSQL Sync replication?
In other words, data might be hit by a STANDBY after the changes have been completed on the database on the primary server which might result in some data loss if the primary server suffers a sudden failure. As the process is asynchronous, there is a minor delay which can usually cause a minor data loss in case of a server crash.
How to terminate replication connection in PostgreSQL server?
This parameter can only be set in the postgresql.conf file or on the server command line. Terminate replication connections that are inactive for longer than this amount of time. This is useful for the sending server to detect a standby crash or network outage. If this value is specified without units, it is taken as milliseconds.
When to disconnect a client in PostgreSQL?
Abrupt disconnection of a streaming client might leave an orphaned connection slot behind until a timeout is reached, so this parameter should be set slightly higher than the maximum number of expected clients so disconnected clients can immediately reconnect. This parameter can only be set at server start.