Originally posted by: Dan_Z

In June, IBM COBOL for AIX, V5.1 and IBM COBOL Runtime Environment for AIX, V5.1 GAed. A key difference from previous versions of COBOL for AIX is that, V5.1 delivers improved runtime performance and functionality. Specifically, with COBOL for AIX, V5.1, the runtime library components cannot be redistributed with developed applications. This runtime can only be used in a development environment, on the same machine as the COBOL for AIX compiler. Deployment of COBOL applications in an execution only environment will require the new IBM COBOL Runtime Environment for AIX, V5.1 product.

This separately orderable runtime product is a complete set of COBOL for AIX library components for production use, which includes runtime libraries, runtime messages, SMARTdata Utilities (SdU) and Encina Structured File Server (SFS) file systems. With this COBOL Runtime Environment, the redistribution of runtime libraries in the COBOL for AIX, V5.1 product is not required nor permitted.

For more information about the installing and updating process, see https://www.ibm.com/support/knowledgecenter/en/SS6SGM_5.1.0/com.ibm.cobol51.aix.doc/install/igyaigch700.html.