Compatibility

z/OS conversion services

Unlike previous levels of CICS® Transaction Server, CICS TS V3 can use z/OS® services to perform conversions beyond those supported by CICS TS in previous releases. An example is conversions to and from Unicode, which might be required to support Web services. This requires z/OS to have the initial conversion image installed, which can only be done on a system IPL. If it is wished to install CICS TS V3 without a re-IPL of z/OS, this can be done provided the initial conversion image is installed during a previous system IPL. The conversion image does not include any code from CICS TS; it can also be refreshed without any need for a further IPL.

JVM modes in CICS

Customers using Java™ programs in CICS TS V3.1 are recommended to use continuous mode. Support for continuous mode was introduced in CICS TS V2.3; in order to bring CICS use of Java into line with standard practices, support for resettable mode will be removed in a future release of CICS TS.
Start of change

SOAP for CICS feature

Applications developed to use the SOAP for CICS feature will continue to run with CICS TS V3.1. However, customers are recommended to migrate to the Web services support capabilities of CICS TS V3.1 because support for the SOAP for CICS Feature support will cease when support of CICS TS V2.3 ceases.End of change

Common Connector Framework (CCF)

The Common Connector Framework (CCF), which was the predecessor interface to the Common Client Interface (CCI), is not supported by CICS TS V3.1. The intention to remove this support was indicated in the announcement of CICS TS V2.3.

ECI Base Classes (ECIREQUEST)

The ECI Base Classes (ECIREQUEST, which were introduced for compatibility with the CICS Transaction Gateway), are not included in CICS TS V3.1. The recommended replacement is the COMMON CLIENT INTERFACE CONNECTOR FOR CICS TS (CCI Connector for CICS TS), introduced in CICS TS V2.3, when it was announced that ECIREQUEST would be removed.

Transaction Affinities utility

CICS TS V3.1 does not include the detector and reporter components previously provided as part of the CICS Transaction Affinities utility. These components are now incorporated in IBM® CICS Interdependency Analyzer for z/OS V1.3, announced in August 2004, which has the capability of analyzing both interdependencies and affinities. The load library scanner component of the CICS Transaction Affinities utility remains in CICS TS V3.1, and can produce reports on application programs which have potential affinities.