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From David Jencks <>
Subject Re: Informix XA data source configuration for IFX_LOCK_MODE_WAIT
Date Fri, 22 Jan 2010 18:06:57 GMT
Following the more careful examination in  TQL-19
  I applied the supplied patch which changed the case of the new  
property and added an ra.xml entry for it.

david jencks

On Jan 13, 2010, at 11:55 AM, David Jencks wrote:

> I added this to the tranql wrapper and pushed a new snapshot to the  
> codehaus snapshot repo.
> Can you verify that this works, that the time unit is seconds, and  
> look around to see if there are other properties we should allow  
> setting on the XADatasource?
> many thanks
> david jencks
> On Jan 13, 2010, at 10:14 AM, Shanmu wrote:
>> Hello everyone, We are using Geronimo 2.1.4 with informix XA driver  
>> version 3.0.0 JC3. The application we build has a process which  
>> runs in the geronimo containner every 2 minutes and updates lots of  
>> tables. in foreground we a web application where users can access  
>> screen and update and retrieve from the same tables. Our  
>> architecture is like this JSP/Struts 2 --> EJB 3.0 with CMT--> DAO  
>> using hibernate uses data source configured in geronimo server-->  
>> informix DB We have configured the data source using the informix  
>> provided drivers and the informix Tran QL connectors. We are  
>> currently facing a problem where we are getting locking issues  
>> frequently when the user and batch process collides. The error is  
>> "Could not do a physical-order read to fetch next row.SQL Error:  
>> -107, SQLState: IX000" The solution provided was to increase the  
>> IFX_LOCK_MODE_WAIT to some reasonable time so that the process  
>> waits for the predefined time before it throws the error. Default  
>> value for this is configured as zero in IFXDatasource. By default  
>> data source configured using the informix XA option does not have  
>> any option to configure this parameter. Neither the hibernate has  
>> any configuration for this, as it is using the data source created  
>> in application server. On analyzing the source code we noticed that  
>> there is a component org.tranql.connector.informix.XAMCF part of  
>> tran QL adapter which creates and configures the data source,  
>> public XAMCF() { super(new IfxXADataSource(), new  
>> NoExceptionsAreFatalSorter()); password = ""; ds =  
>> (IfxXADataSource)xaDataSource; } This IFXData source doesn not have  
>> the option of lock mode wait setup, which can be done using the  
>> method "setIfxIFX_LOCK_MODE_WAIT". My questions are: 1. Is there  
>> any option where in we can configure the IFX_LOCK_MODE_WAIT  
>> parameter? 2. If not is there any patch with this enhancement done.  
>> Thanks in advance Best Regards Shanmu
>> View this message in context: Informix XA data source configuration  
>> Sent from the Apache Geronimo - Dev mailing list archive at  

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