On 28 Jul 2020, at 09:25, Denys Pozniak <denys.pozniak(a)gmail.com> wrote: Hello! Sometimes presence server stops sending SIP NOTIFY events with syslog output below (after Kamailio restarting everything is restored): Jul 27 17:07:28 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:28 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Jul 27 17:07:29 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:29 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Jul 27 17:07:37 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:37 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Jul 27 17:07:37 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:37 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Jul 27 17:07:41 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:41 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Jul 27 17:07:41 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: db_mysql [km_dbase.c:602]: db_mysql_start_transaction(): transaction already started Jul 27 17:07:41 prd-sip-presence-2 /usr/sbin/kamailio[4838]: ERROR: kazoo [kz_pua.c:131]: kz_pua_update_presentity(): in start_transaction Where is a possible source of the problem? Kamailio 5.1.2 with MySQL modparam("presence", "db_url", DBURL) modparam("presence", "subs_db_mode", 3) modparam("presence", "timeout_rm_subs", 0) modparam("presence", "expires_offset", 0) modparam("presence", "max_expires", 1800) modparam("presence", "db_update_period", 30) modparam("presence", "clean_period", 180) modparam("presence", "send_fast_notify", 1) modparam("presence", "pres_htable_size", 32) modparam("presence", "subs_htable_size", 32) modparam("presence", "publ_cache", 0) modparam("presence", "notifier_processes", 0) modparam("presence_xml", "db_url", DBURL) modparam("presence_xml", "force_active", 1) modparam("presence_xml", "integrated_xcap_server", 0) modparam("presence_xml", "disable_presence", 1) modparam("presence_xml", "disable_winfo", 1) modparam("presence_dialoginfo", "force_single_dialog", 1) modparam("presence_dialoginfo", "force_dummy_dialog", 1) modparam("dialog", "dlg_flag", 4) modparam("dialog", "db_mode", 0) modparam("dialog", "dlg_match_mode", 1) modparam("kazoo", "node_hostname", NODE_HOSTNAME) modparam("kazoo", "amqp_connection", "AMQP_URL") modparam("kazoo", "pua_mode", 1) modparam("kazoo", "db_url", DBURL) modparam("kazoo", "amqp_consumer_processes", 10) modparam("kazoo", "amqp_max_channels", 50) -- BR, Denys Pozniak _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users