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J2EE Engine not started

Hi,

We are having R/3 System ECC 5.0 along with Java (ABAP+JAVA Stack) on 640. While trying to start java the following error is occuring in server0.out file:

com.sap.security.core.persistence [SAPEngine_Sys

tem_Thread[impl:5]_25] Fatal: User Management Engine (com.sap.security.core.persistence.datasource.imp.R3Persistence) failed to connect to the ABAP backend system. Check that connection data are correct and the backend system is available.

Error message: "Name or password is incorrect. Please re-enter". Connection data (obtained from properties of UME service in section "ume.r3.connection.master."

: "{ passwd=********

receiverid=master

sysnr=00

client=910

poolmaxsize=10

user=SAPJSF

receiverid_guest=master

}

IF i go jcmon it is showing dispatcher,server0 and SDM are running, also ps -ef showing jcontrol as running. But the above error is happening continuously and also i could not open the page from http://server:50000/index.html

Any thoughts on this will be useful.

Thanks,

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