hi there again,
i have ibatis/abator included in my web application using struts.
everything is running great until now, but when i came to my testserver
this morning i got the follwoing error
when doing any request that needs access to database:
...
Caused by: java.sql.SQLException: No more data to read from socket
at
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at
oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at
oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1118)
at
oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1070)
at
oracle.jdbc.driver.T4C7Ocommoncall.receive(T4C7Ocommoncall.java:106)
at
oracle.jdbc.driver.T4CConnection.doRollback(T4CConnection.java:567)
...
..as far as know this error is caused by a connection timout at the
database connection.
i thought, that configuring a 'PingQuery' would prevent this by continuing
sending kinda pings on the connection
in case nothing else happens to keep it up.
therefore i configured abator as follows:
<jdbcConnection
driverClass="oracle.jdbc.driver.OracleDriver"
connectionURL="jdbc:oracle:thin:xxxxxxxxxxxxxxxxx"
userId="xxxxxxxx"
password="xxxxxx"
>
<classPathEntry location="xxxxxxxxx/ojdbc14.jar" />
<property name="Pool.TimeToWait" value="500"/>
<property name="Pool.PingQuery" value="SELECT 1 FROM DUAL"/>
<property name="Pool.PingEnabled" value="true"/>
<!-- time in millisecs 3600000 = 1h -->
<property name="Pool.PingConnectionsOlderThan"
value="3600000"/>
<property name="Pool.PingConnectionsNotUsedFor"
value="3600000"/>
</jdbcConnection>
i expected this configuration of abator to do pings every hour, which
should be enough to keep the connection to
database alive.
why does abator/ibatis not behave as i expect?
is there a possibility to check if the ping really happens?
thanks in advance
tom.
