Informix hang
A Java app using the Informix JDBC driver with a dynamic connection pool (min 2, max 50) appeared to hang the remote Informix server after about ten minutes of load, blocking other clients until the Java app was restarted. Suggestions: full logical logs, or exhausting the server's configured connections (Art Kagel suggested lowering the pool maximum or raising the relevant NETTYPE setting in ONCONFIG), plus advice to check onstat -l/-m/-a and try connecting with dbaccess. The poster never replied, so no resolution is recorded.
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Hi, We are running a Java application under load which uses Informix JDBC driver The Informix server is located on another server First we tried static connection pool, everything seems to work fine however for some reason we can not use static connection pool So, we enable dynamic connection pool with the following settings: min = 2, max = 50 After ten minutes of load, the Informix server seems to be hanged, other clients are not able to connect to it as well The only way to recover from this situation is to restart our java application! Any clue? Thanks /Inbal
Yaron Reinharts said: > Hi, > > We are running a Java application under load which uses Informix JDBC > driver > The Informix server is located on another server > > First we tried static connection pool, everything seems to work fine > however > for some reason we can not use static connection pool > So, we enable dynamic connection pool with the following settings: min = > 2, > max = 50 > After ten minutes of load, the Informix server seems to be hanged, other > clients are not able to connect to it as well > The only way to recover from this situation is to restart our java > application! > > Any clue? Perhaps your logical logs are full? -- Bye now, Obnoxio "There were a myriad of problems which conspired to corrupt your reason and rob you of your common sense. Fear got the best of you, and in your panic you turned to the Labour Party. They promised you order, they promised you peace, and all they demanded in return was your silent, obedient consent." -- This message has been scanned for viruses and dangerous content by OpenProtect(http://www.openprotect.com), and is believed to be clean.
Yaron Reinharts wrote: > Hi, > > We are running a Java application under load which uses Informix JDBC driver > The Informix server is located on another server > > First we tried static connection pool, everything seems to work fine however > for some reason we can not use static connection pool > So, we enable dynamic connection pool with the following settings: min = 2, > max = 50 > After ten minutes of load, the Informix server seems to be hanged, other > clients are not able to connect to it as well > The only way to recover from this situation is to restart our java > application! > Sounds to me like you are using shared memory connections and only have 50 configured. Once the Java app has glommed all 50 available connections it hangs trying to get the 51st connection and so do all the other apps. Once you dropped the Java app you freed up however many connections it was holding. Try reducing the max connections in the Java pool or increasing the NETTYPE setting for ipcshm in the ONCONFIG file. Art S. Kagel Oninit > Any clue? > > Thanks > /Inbal > =========================================================================================== Please access the attached hyperlink for an important electronic communications disclaimer: http://www.oninit.com/home/disclaimer.php ===========================================================================================
as far as i know only tcp connections in java.
the output from an onstat -l to rule out Obnoxio suggestion or at
least onstat -m or all of it... onstat -a???
that may give a clue why it hangs....??? if it does hang..
can you connect on the server using dbaccess??
Superboer.
On 28 feb, 15:08, "Art S. Kagel (Oninit)" <a...@oninit.com> wrote:
> Yaron Reinharts wrote:
> > Hi,
>
> > We are running a Java application under load which uses Informix JDBC driver
> > The Informix server is located on another server
>
> > First we tried static connection pool, everything seems to work fine however
> > for some reason we can not use static connection pool
> > So, we enable dynamic connection pool with the following settings: min = 2,
> > max = 50
> > After ten minutes of load, the Informix server seems to be hanged, other
> > clients are not able to connect to it as well
> > The only way to recover from this situation is to restart our java
> > application!
>
> Sounds to me like you are using shared memory connections and only have
> 50 configured. Once the Java app has glommed all 50 available
> connections it hangs trying to get the 51st connection and so do all the
> other apps. Once you dropped the Java app you freed up however many
> connections it was holding. Try reducing the max connections in the
> Java pool or increasing the NETTYPE setting for ipcshm in the ONCONFIG file.
>
> Art S. Kagel
> Oninit
>
> > Any clue?
>
> > Thanks
> > /Inbal
>
> ===========================================================================================
> Please access the attached hyperlink for an important electronic communications disclaimer:
>
> http://www.oninit.com/home/disclaimer.php
>
> ===========================================================================================