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Date: Wed, 18 Aug 2010 10:16:17 -0400 (EDT)
From: "Kathey Marsden (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-2026) Setting a login timeout in client
 driver can lead to query timeout
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    [ https://issues.apache.org/jira/browse/DERBY-2026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899854#action_12899854 ] 

Kathey Marsden commented on DERBY-2026:
---------------------------------------

I went ahead and submitted to trunk and will leave this open while I backport to 10.5


> Setting a login timeout in client driver can lead to query timeout
> ------------------------------------------------------------------
>
>                 Key: DERBY-2026
>                 URL: https://issues.apache.org/jira/browse/DERBY-2026
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC, Network Client
>    Affects Versions: 10.3.1.4
>         Environment: Client driver on most platforms
>            Reporter: Olav Sandstaa
>            Assignee: Mamta A. Satoor
>            Priority: Minor
>         Attachments: derby-2026_diff.txt, DERBY2026_LoginTimeout_diff_patch1.txt, LoginTimeout.java, LoginTimeoutWithDataSource.java
>
>
> Setting the login timeout by using DriverManager.setLoginTimeout(int
> seconds) also affects the amount of time the client driver is waiting
> for a query to finish. For instance, setting the login timeout to 10
> seconds will result in any queries taking more than 10 seconds to fail
> with the following exception:
> Exception thrown: java.sql.SQLException: A communications error has been detected: Read timed out.
> java.sql.SQLException: A communications error has been detected: Read timed out.
>         at org.apache.derby.client.am.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:46)
>         at org.apache.derby.client.am.SqlException.getSQLException(SqlException.java:345)
>         at org.apache.derby.client.am.Statement.executeQuery(Statement.java:414)
>         at LoginTimeout.main(LoginTimeout.java:53)
> Caused by: org.apache.derby.client.am.DisconnectException: A communications error has been detected: Read timed out.
>         at org.apache.derby.client.net.NetAgent.throwCommunicationsFailure(NetAgent.java:408)
>         at org.apache.derby.client.net.Reply.fill(Reply.java:176)
>         at org.apache.derby.client.net.Reply.ensureALayerDataInBuffer(Reply.java:215)
>         at org.apache.derby.client.net.Reply.readDssHeader(Reply.java:317)
>         at org.apache.derby.client.net.Reply.startSameIdChainParse(Reply.java:1147)
>         at org.apache.derby.client.net.NetStatementReply.readPrepareDescribeOutput(NetStatementReply.java:51)
>         at org.apache.derby.client.net.StatementReply.readPrepareDescribeOutput(StatementReply.java:40)
>         at org.apache.derby.client.net.NetStatement.readPrepareDescribeOutput_(NetStatement.java:139)
>         at org.apache.derby.client.am.Statement.readPrepareDescribeOutput(Statement.java:1341)
>         at org.apache.derby.client.am.Statement.flowExecute(Statement.java:1977)
>         at org.apache.derby.client.am.Statement.executeQueryX(Statement.java:420)
>         at org.apache.derby.client.am.Statement.executeQuery(Statement.java:405)
>         ... 1 more
> Caused by: java.net.SocketTimeoutException: Read timed out
>         at java.net.SocketInputStream.socketRead0(Native Method)
>         at java.net.SocketInputStream.read(SocketInputStream.java:129)
>         at org.apache.derby.client.net.Reply.fill(Reply.java:174)
>         ... 11 more

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