Datasource bounding between jboss and informix db

Question

I am creating a informix datasource in jboss4.0.2, but I always got error like this, so the connection is null.
16:29:08,821 INFO [ConnectionFactoryBindingService] Unbound connection factory
for resource adapter for ConnectionManager 'jboss.jca:name=ds/fastDB,service=Dat
aSourceBinding from JNDI name 'java:ds/fastDB'
the following is my informix-ds.xml file and java codes: appreciated if someone can let me know the cause and solution.
-------- informix-ds.xml -------------------------
<datasources>
<local-tx-datasource>
<jndi-name>ds/fastDB</jndi-name>
<connection-url>jdbc:informix-sqli://10.20.10.101:1621/fastdb1:INFORMIXSERVER=dbdev</connection-url>
<driver-class>com.informix.jdbc.IfxDriver</driver-class>
<user-name>fast</user-name>
<password>fast123</password>
<min-pool-size>5</min-pool-size>
<max-pool-size>20</max-pool-size>
<idle-timeout-minutes>10</idle-timeout-minutes>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.InformixExceptionSorter</exception-sorter-class-name>
<metadata>
<type-mapping>InformixDB</type-mapping>
</metadata>
</local-tx-datasource>
</datasources>
----------my jave codes -----------------
InitialContext initContext = new InitialContext();
ds = (DataSource)initContext.lookup("java:ds/fastDB");
con = ds.getConnection();

Answer 1

Hi,
We have a similar problem but we think its done at the firewall instead of the DB. Did you try this settin gin the data-srouce.xml?
clean-available-connections-threshold="30"
We are testing this to see if this works in addition to:
Configure TCP Keepalive on the database and midtier servers to keep the database connection 'busy' at operating system level. The exact kernel parameters to use depend on the operating system. The TCP Keepalive time setting must be less than the firewall connection timeout setting.
To give an example, for a Linux RedHat server, to enable TCP Keepalive to ping socket connections every 300 seconds, run the following as root:
sysctl -w net.ipv4.tcp_keepalive_time = 300
sysctl -w net.ipv4.tcp_keepalive_probes = 3
sysctl -w net.ipv4.tcp_keepalive_intvl = 20
TCP_KEEPALIVE_TIME
Description: Determines how often to send TCP keepalive packets to keep an connection alive if it is currently unused.
TCP_KEEPALIVE_INTERVAL
Description: Determines the wait time between isAlive interval probes.
TCP_KEEPALIVE_PROBES
Description: Determines the number of probes before timing out.
Note: sysctl will modify runtime settings. To maintain these parameter changes after server reboot, modify the /etc/sysctl.conf file also.
Andrew