JIRA can't obtain connection from database due to no buffer space available
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
The following appears in the atlassian-jira.log:
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java.lang.RuntimeException: Unable to obtain a connection from the underlying connection pool
at org.ofbiz.core.entity.jdbc.interceptors.connection.ConnectionTracker.trackConnection(ConnectionTracker.java:59)
at org.ofbiz.core.entity.transaction.DBCPConnectionFactory.trackConnection(DBCPConnectionFactory.java:149)
at org.ofbiz.core.entity.transaction.DBCPConnectionFactory.getConnection(DBCPConnectionFactory.java:69)
at org.ofbiz.core.entity.ConnectionFactory.tryGenericConnectionSources(ConnectionFactory.java:69)
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Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)Cause
JIRA can't create any new sockets when it's trying to talk to the database. This could be caused by another application on the same server as JIRA is leaking sockets (opening lots of sockets, but never closing them). For example, a real time database mirroring.
Resolution
Temporary disable any application or applications' mechanism which might used up a lot of sockets.
Run
netstat -non the server hosting JIRA (if Linux) and check whether sockets are being created excessively by applications.
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