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The SAP Java Connector (SAP JCo) is a development library that enables a Java application to communicate with SAP systems via SAP’s RFC protocol. The SAP JCo supports both communication directions: inbound Remote Function Calls (Java calls ABAP) as well as outbound Remote Function Calls (ABAP calls Java).https://support.sap.com/en/product/connectors/jco.html
SAP JCo is also used in SAP Commerce to enable RFC Calls to the SAP ERP System to Request or Send Data and is shipped together with the SAP Commerce Platform (extension: sapcorejco).
If you use it in your project or not depends on the Project Requirements. Still if you want to use it your System, especially on Macbooks, needs to support the SAP JCo Library.
SAP JCo is shipped together with SAP Commerce, unfortunately SAP JCo didn´t support the M1 Chip on Macbooks until december 21, 2022. After SAP Released the Version 3.1 as well for the M1 Chip, I just switched the libsapjco3.dylib that is shipped with SAP Commerce with the newly released SAP JCo for “Apple macOs 64-bit ARM” from SAP Java Connector and installed the correct SapMachine without Rosetta 2.
Before you start with using SAP JCo it is necessary install a Java JDK (Recommendation by SAP: SapMachine )
If you are not using SAP Commerce you also need to make sure to download the correct SAP Java Connector SDK from SAP Java Connector that is supporting your Processor.
If you are using an Macbook you may face some Issues as SAP didn’t support the M1 chip for quite some time and only recently released a Version that is Supporting the M1 Chip.
Macbooks without an M1 Chip are using an Intel-Chip as CPU and using SAP JCo is not a problem, as the Library is Supporting this Processor Structure.
See: https://support.sap.com/en/product/connectors/jco.html
To Develop with SAP JCo or SAP Commerce with JCo you just need to install the correct Java JDK
Macbooks with an M1 Chip were running in Problems, as SAP JCo didn’t support the ARM Processor Structure on Apply until December 21, 2022.
To use SAP JCo (maybe with SAP Commerce) it was necessary to install the Java JDK via Rosetta 2 (How to run the Homebrew installer under Rosetta 2 on M1 Macbook) which comes with some loss of Performance.
1 arch -x86_64 brew install sapmachine17-jdkNow you are able to develop with SAP JCo.
Since December 21, 2022 SAP Released a new Version of SAP JCo that is also supporting the M1 Chip.
SAP still needs to provide a new Patch vor SAP Commerce to add the new Version to it.
Until then you can just download the “Apple macOs 64-bit ARM” Version from the Official Site.
After the Download has finished unpack the File and identify the File libsapjco3.dylib in sapcorejco/lib/darwinintel64 and replace it with your newly downloaded file.
Finally make sure that you have installed the correct Java JDK.
If you have previously installed it with rosetta2, first uninstall it with:
1 brew uninstall sapmachine17-jdkand reinstall it with:
1 brew install sapmachine17-jdkAfter building SAP Commerce or your custom Application you can start with developing your Features.
Working with Rosetta 2 and Java JDK was possible, but the Performance impact was huge. It took 3 times the Time to start SAP Commerce 2211.
During Integration testing this was the most time consuming part of developing new Features.
After SAP finally released SAP JCo for the M1 Chip as well I was able to speed up development of Features as Integration Tests was way faster than before.
