Hi Chris,

From: Christopher Schultz <ch...@christopherschultz.net>
Sent: 24 March 2016 19:42
To: Tomcat Users List
Subject: Re: Tomcat 8 Connection Reset Issue

Hash: SHA1


On 3/24/16 1:19 PM, Theo Sweeny wrote:
> Hello - we are running Tomcat v8.0.21 on RH7 with Java7.
> Recently we changed the datasource's to use connection pooling but
> as a result we are seeing connection timeouts in the logs as seen
> here -
> 2016-03-24 16:27:36,638 14321113 [http-nio-20180-exec-3] INFO
> org.springframework.security.oauth2.provider.endpoint.TokenEndpoint
> Timestamp=2016-03-24T14:54:46.084Z - Handling error:
> ResourceAccessException, I/O error on POST request for
> "https://localhost:8080/membership/programmes/ATRP/member-identificati
reset; nested exception is java.net.SocketException: Connection
> reset

That looks like an error with a Spring-related component, not Tomcat.
(Right?). There are plenty of folks here who might be able to answer
this question, but I think this is actually off-topic for this list.
(No problem; carry on. Just pointing it out).

> The timeouts occur about every 1 in 3 attempts.
> Here is the new datasource config -
> <Resource name="jdbc/MyDataSource" auth="Container"
> factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
> type="javax.sql.DataSource"
> driverClassName="oracle.jdbc.OracleDriver"
> url="jdbc:oracle:thin:@myhost:1521:MYSID" username="MYUSER"
> password="xxxxxxxxx" removeAbandoned="True"
> removeAbandonedTimeout="30" logAbandoned="True"
> abandonWhenPercentageFull="0" testOnBorrow="True"
> testOnReturn="False" testWhileIdle="True" maxActive="32"
> initialSize="8" maxIdle="8" minIdle="8"
> minEvictableIdleTimeMillis="15000" validationQuery="select 1 from
> dual" validationInterval="15000" validationQueryTimeout="15"
> timeBetweenEvictionRunsMillis="15000" logValidationErrors="True"
> jdbcInterceptors="ConnectionState;StatementFinalizer;SlowQueryReport(t
> Are there any conflicts within this config that could be resulting
> in this issue?

I don't believe your JNDI DataSource has anything to do with making
outgoing connections to OAuth providers...

- -chris
Comment: GPGTools - http://gpgtools.org
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Thanks for the replay.

Yes - that does look like a spring connect timeout - which then passes back to 
java.net.SocketException: Connection reset. So either the client or the server 
is resetting before the connection can complete.

The only system change to coincide with these connection resets is the new 
connection pool config as listed above. This implies that there is some 
conflict within the datasource config.

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