Hi Frédérick, PostgreSQL BDR uses 'Master-Master' replication and requires locking if any of the PostgreSQL BDR nodes (that are in replication cluster) executes DDL SQL queries. It causes the whole cluster to lock as far as I remember. The reason you may be experiencing the database getting locked when you restart one of the FreeSWITCH nodes is that FreeSWITCH upon its start/restart executes DDL queries. FreeSWITCH AFAIK unconditionally executes 'DROP TABLE/VIEW...' and 'CREATE TABLE/VIEW ...' for tables like 'channels', 'calls', 'interfaces', 'tasks' (TABLES) & 'detailed_calls', 'basic_calls' (VIEWS) that ultimately leads to PostgreSQL BDR getting locked. -- Praveen Chourasia ________________________________ From: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> on behalf of Frédérick Pruneau <frederick@targointernet.com> Sent: Monday, May 6, 2019 7:38 PM To: freeswitch-users@lists.freeswitch.org Subject: [Freeswitch-users] FS can't reconnect to PostgreSQL database Hi guys, I have an issue with FS unable to reconnect to postgresql database. Here is the setup: 2 FreeSWITCH servers with 2 postgresql servers. Each freeswitch is connected to 1 postgresql server. DB servers are synced with BDR. It was working very well until I restarted freeswitch service on one of the servers. Then, I got theses errors showing up on freeswitch console: switch_pgsql.c:384 Query X took too long to complete or database not responding. database is locked against ddl by another node I followed some guides to remove locks with these commands: SELECT * FROM pg_stat_activity; SELECT pg_terminate_backend(${pid}); But the issue is still there. Do you have an idea how to fix this issue? Thanks. _________________________________________________________________________ The FreeSWITCH project is sponsored by SignalWire https://signalwire.com Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services. Build your next product on our scalable cloud platform. Join our online community to chat in real time https://signalwire.community Professional FreeSWITCH Services sales@freeswitch.com https://freeswitch.com Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users https://freeswitch.com