This information details changes that you need to consider when upgrading to the current release from V8.1.
When you upgrade, the installation process keeps your existing <install_path>.
The Client daemon information and error log files are now written in the UTF-8 text encoding on Windows. When using existing log files that were created with an earlier version of CICS® TG, new log messages might appear incorrectly due to the change of text encoding. To avoid this, rename or remove existing Client log files before starting CICS Transaction Gateway, or update your CICS Transaction Gateway configuration to use new Client daemon log files. For more information, see Client daemon logging.
Existing single threaded ECI V2 and ESI 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.
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 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.
The default setting of the server idle timeout period for IPIC server connections (see Server idle timeout) 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 also remote mode topologies which do not configure an IPIC server idle timeout.
The deprecated field Message_Qualifier has been removed from the Java API. Applications that used this field will need to use the getMessageQualifier() and setMessageQualifier() methods instead.
Java client applications using the deprecated field can still connect to CICS TG V9.0 when run in remote mode using a CICS TG V8.1 or earlier ctgclient.jar file