Items that you need to consider when upgrading to a newer version of CICS® Transaction Gateway on UNIX and Linux.
When you upgrade, the installation process keeps your existing <install_path>.
Existing single threaded ECI V2 applications on HP-UX that are not explicitly linked with the libpthread shared library must be rebuilt to link with libpthread. Applications that are not linked with libpthread might fail to establish a connection when connecting to the Gateway daemon with the error CTG_ERR_CONNECTFAILED. For more information, see Compiling and linking C and COBOL applications on HPUX.
CICS Transaction Gateway configurations that worked with previous releases might not work after upgrade; configuration checking is enhanced to ensure that the values used by CICS Transaction Gateway are the intended ones. Protocol handlers are not started unless explicitly configured.
The ecigenericreplies, msgqualvalidation, and uowvalidation parameters are no longer supported. This means that ECI_GET_REPLY and ECI_GET_REPLY_WAIT call types are no longer available in remote mode and message qualifiers and LUW tokens are validated so that they can be used only on the JavaGateway connection to that they were allocated.
If one or more of these parameters are specified in the configuration file, the Gateway daemon ignores the value and startup continues. If you use the Configuration Tool to edit a configuration file that contains any of these parameters, the Configuration Tool removes all instances of the deprecated parameters when the configuration file is updated. If you do not use the Configuration Tool to edit your configuration files, you must manually remove the deprecated parameters from the configuration file.
ECI V2 asynchronous call support is unaffected by the deprecation of these parameters.
The JAR file cicsj2ee.jar file is renamed to cicsjee.jar.
Server names must now use characters from the supported character list to ensure that all CICS TG functions work correctly. Existing configuration files containing server names using unsupported characters can continue to be used as an aid to migration but might not work in all scenarios. Configuration files containing server names that use unsupported characters should be migrated as soon as possible.
For the list of supported characters, see the relevant page on configuring the server name for the required protocol in Configuring CICS server connections.
The default setting of the server idle timeout period for IPIC server connections has been changed to zero, so that the idle timeout period is disabled. Previously, IPIC server connections would be closed if idle for more than 60 minutes. This change affects local mode topologies and remote mode topologies which do not configure a IPIC server idle timeout.
The SSL key ring settings are now product wide; they have been moved from the SSL protocol handler in the GATEWAY section to the PRODUCT section of the configuration file. The same SSL key ring settings are used for both SSL protocol handler and IPIC server SSL connection definitions. The SSL key ring parameters must be defined in the PRODUCT section in order to use IPIC over SSL. The definition of the SSL key ring parameters in the GATEWAY section is supported, if not using IPIC over SSL, for migration purposes. The SSL key ring settings are: keyring, keyringpw, and keyringpwscrambled.