Using SAP JCO to connect SAP server to JAVA application

I would suggest you to use below instead of JCO_AHOST and JCO_SYSNR:

Use JCO_R3NAME with system ID of the target host

Use JCO_MSHOST with message server host name or IP address

Use JCO_MSSERV with message server port number

Use JCO_GROUP with the name of the logon group

You can refer to below link to check a working example:

Updated on: 25-Jun-2020

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