Hi Larry,
did you read and follow the sequence documented 
here:https://www.ibm.com/docs/en/ims/14.1.0?topic=cci-sample-application-code???
1. Create mcf = new IMSManagedConnectionFactory2. Use the setter methods3. 
IMSConnectionFactory icf = (IMSConnectionFactory)mcf.createConnectionFactory(); 
(if you dont create your own poolmgr instance)4. IMSConnectionSpec ics = new 
IMSConnectionSpec()5. Use the setter methods6. conn = icf.getConnection(ics);
Hope it helps.


-----Original Message-----
From: Larry Zhang <000003b304d39e8e-dmarc-requ...@listserv.ua.edu>
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Fri, Sep 10, 2021 4:35 am
Subject: Re: IMS Resource Adaptor to ( IMS connect) Error -for 
ManagedConnectionFactory

 yes, I already went there, if you read it, this article helps me nothing;  
  - IBM IMS
  - 14.1.0
FeedbackProduct list
ICO0054E javax.resource.ResourceException:
ICO0054E:methodname error.
Invalid ConnectionSpec.

Explanation
The IMS TM resource adapter was unable to cast the provided connectionSpec for 
this connection to type IMSConnectionSpec. Although the Common Client Interface 
accepts a connectionSpec object for any supported connector, the IMS TM 
resource adapter works only with an IMSConnectionSpec or a derivative of 
IMSConnectionSpec as its connectionSpec.
User response
Ensure that the connectionSpec used by your application is an IMSConnectionSpec 
or inherits from IMSConnectionSpec.Parent topic:IMS TM resource adapter 
messages and exceptions

    On Thursday, September 9, 2021, 08:05:13 PM EDT, Sri h Kolusu 
<skol...@us.ibm.com> wrote:  
 
 > ICO0054E:
com.ibm.connector2.ims.ico.IMSConnectionFactory@2a5c2062.getConnection(ConnectionSpec)

> error. Invalid ConnectionSpec.


Larry zhang,

Did you try to resolve the above error?

https://www.ibm.com/docs/en/ims/14.1.0?topic=exceptions-ico0054e


Thanks,
Kolusu



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