SAP error-when posting from J2ee

[Former Member]

  Error thrown in production app server when Posting to SAP from J2ee:

            1) com.sap.mw.jco.JCO$Exception: (102) JCO_ERROR_COMMUNICATION: A pool with the identifier 'R3' already exists.

            2) com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: CMALLC : rc=19 > Connect from SAP gateway to RFC server failed
Connect_PM GWHOST=sapdb.thehindu.co.in, GWSERV=sapgw01, SYSNR=01

LOCATION SAP-Gateway on host sapdb / sapgw01
ERROR       hostname 'sapdb.thehindu.co.in' unknown
TIME        Sun Jun 23 19:21:39 201
RELEASE     720
COMPONENT   NI (network interface)
VERSION 40
RC          -2
MODULE      nixxhl.cpp
LINE        193
DETAIL NiHLGetNodeAddr: hostname cached as unknown
COUNTER     2

Kindly assist.

Regards,

Gayathri

[Former Member]

In addition to S Sriram suggestion: about point 2). Add to hosts file/DNS resolution to sapdb.thehindu.co.in host IP address.

[Sriram2009]

Hi Gayathri

Kindly go thru the SAP Note 1834363 - JCO$Exception: (102) A pool with the ident... already exists

Thanks

Sriram

[amolgupta]

This might be helpful -
http://help.sap.com/saphelp_nw04/helpdata/en/f6/daea401675752ae10000000a155106/content.htm

[vijay_kumar49]

Dear Gayathri,

Did you modify the services file on the system where your J2EE is running. if not do the following.

In the location,WINNT\system32\drivers\etc, Open the file services.

Add the following entry at the end.

sapms<3 letter alphabet what you have given for creating the technical system> <a tab> 36+<Instance number><press enter>

in your case this will be sapmsGMH 36<Insance number>

Please reffer this http://scn.sap.com/thread/40061

Hope this helps!!

Regards

Vijay K