Hi there I have a process in place which runs several queries from one host to another one All of a sudden I started noticing authentication failures Like below .009 ms statement: COPY NACDS.tf_show_code_response_person FROM STDIN with csv;",,,,,,,,,"psql" 2018-04-12 00:10:48.765 CDT,"csidba","birstdb",7553,"172.16.20.4:40330",5aceea2e.1d81,1,"UPDATE",2018-04-12 00:10:06 CDT,24/0,0,LOG,00000,"duration: 425 90.993 ms statement: UPDATE csischema.tf_transaction_person SET is_deleted = 'TRUE', birst_is_deleted = 'TRUE', update_datetime = now()::timestamp(0) WHERE show_id = '984BIOWC18' AND birst_is_deleted = 'FALSE' AND person_transaction_id IN ( SELECT a.person_transaction_id FROM csischema.tf_transaction_person a LEFT JOIN BIOWC.tf_transaction_person b ON a.person_transaction_id=b.person_transaction_id WHERE a.show_id = '984BIOWC18' AND b.person_transaction_id IS NULL ) ;",,,,,,,,,"psql" 2018-04-12 00:10:48.823 CDT,"csidba","birstdb",7755,"172.16.20.4:40455",5aceea58.1e4b,1,"authentication",2018-04-12 00:10:48 CDT,3/20320168,0,FATAL,28P0 1,"password authentication failed for user ""csidba""","Connection matched pg_hba.conf line 84: ""host all all 0.0.0.0/0 md5""",,,,,,,,"" 2018-04-12 00:10:48.841 CDT,"csidba","birstdb",7756,"172.16.20.4:40456",5aceea58.1e4c,1,"authentication",2018-04-12 00:10:48 CDT,3/20320169,0,FATAL,28P0 1,"password authentication failed for user ""csidba""","Connection matched pg_hba.conf line 84: ""host all all 0.0.0.0/0 md5""",,,,,,,,"" 2018-04-12 00:10:48.957 CDT,"csidba","birstdb",7759,"172.16.20.4:40459",5aceea58.1e4f,1,"authentication",2018-04-12 00:10:48 CDT,3/20320172,0,FATAL,28P0 pg_hba.conf # "local" is for Unix domain socket connections only #local all all peer local all all md5 # IPv4 local connections: #host all all 127.0.0.1/32 ident host all all 0.0.0.0/0 md5 # IPv6 local connections: host all all ::1/128 ident # Allow replication connections from localhost, by a user with the # replication privilege. #local replication postgres peer #host replication postgres 127.0.0.1/32 ident #host replication postgres ::1/128 ident local replication csidba md5 host replication csidba 127.0.0.1/32 md5 host replication csidba 0.0.0.0/0 md5 local replication repuser md5 host replication repuser 127.0.0.1/32 md5 host replication repuser 0.0.0.0/0 md5 local all repuser md5 host all repuser 127.0.0.1/32 md5 host all repuser 0.0.0.0/0 md5 Did I run in somthing similar to a racong condition ? Any ideas ? Many thanks — Armand