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Colin Dean commented on NIFI-5789: ---------------------------------- This came from the my Stack Overflow question, [How can I configure NiFi's DBCPConnectionPool not to keep idle connections open?|https://stackoverflow.com/questions/53110163/how-can-i-configure-nifis-dbcpconnectionpool-not-to-keep-idle-connections-open] > DBCPConnectionPool controller service always leaves one connection open > ----------------------------------------------------------------------- > > Key: NIFI-5789 > URL: https://issues.apache.org/jira/browse/NIFI-5789 > Project: Apache NiFi > Issue Type: Bug > Components: Extensions > Affects Versions: 1.8.0 > Environment: Linux, OpenJDK 8, jTDS 1.3.1, MS SQL Server 2016 > Reporter: Colin Dean > Priority: Major > Labels: DBCP, database > > Out of the box, NiFi (at least, as of 1.8.0), appears to keep open one > database connection for each DBCPConnectionPool controller service enabled. > I have multiple DBCPConnectionPool controller services configured to access > the same server with different options, so this quickly adds up against a > limited number of connections to my database server. I have a scheduled > workflow that runs ~nightly. Connections need not be active except when in > active use during a short window of time. -- This message was sent by Atlassian JIRA (v7.6.3#76005)