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keep-alive

PostgreSQL High Availability: Patroni, Ectd , HAProxy , Keepalived

By Mouhamadou Diaw Patroni is one the most famous tool that can be used to setup a high avalaibilty for PostgreSQL. In this blog I am describing a test I did. Below the environment we will use The etcd cluster will contains 3 servers etcd-server1: 192.168.56.100 etcd-server2: 192.168.56.101 etcd-server3: 192.168.56.106 HAProxy and Keepalived will be configured in this 2 servers.… 

SQLNET.EXPIRE_TIME and ENABLE=BROKEN

By Franck Pachot . Those parameters, SQLNET.EXPIRE_TIME in sqlnet.ora and ENABLE=BROKEN in a connection description exist for a long time but may have changed in behavior. They are both related to detecting dead TCP connections with keep-alive probes. The former from the server, and the latter from the client. The change in 12c is described in the following MOS note:…