16 Migration From Previous Releases

This chapter describes how to migrate to new instances of Oracle Database Gateway for DRDA from an existing installation. Perform the following steps to migrate to a new release of Oracle Database Gateway for DRDA from an existing release:

Install the New Release
Gateway Initialization Parameter File
Update the Initialization Parameters
Bind Gateway Package
Install/Upgrade Data Dictionary Views

16.1 Install the New Release

Install the new release of the gateway in a separate directory, as discussed in Chapter 12, "Installing Oracle Database Gateway for DRDA".

Caution:

Do not install the gateway over a previously existing gateway installation. This corrupts the existing installation.

16.2 Gateway Initialization Parameter File

This release of Database Gateway for DRDA has a completely new architecture. Most of the prior parameters are obsolete. You should not use the old initialization file as a base and try to modify it. Instead, you should use the new initialization generated as part of installation as a base. Refer to Appendix C, "Initialization Parameters" for the syntax of the parameters.

Existing TG4DB2 customer migrating to this release of Database Gateway for DRDA would need to provide the recovery user's password HS_FDS_RECOVERY_PWD, with this release of gateway.

16.3 Update the Initialization Parameters

The next step in migrating to a new release of Oracle Database Gateway for DRDA consists of updating the initialization parameters.

16.3.1 Changed Parameters

The use of DRDA_CONNECT_PARM has changed in this version. Refer to Appendix C, "Initialization Parameters" for the syntax of the parameter.

16.3.2 Obsolete Parameters

The following parameters are obsolete for the 11g version. Remove them from your configuration files:

MODE
SERVER_PATH
DRDA_OVERRIDE_FROM_CODEPAGE
DRDA_OVERRIDE_TO_CODEPAGE
ERROR_LOGGING
ERROR_REPORTING
ERRORTAG
GATEWAY_SID
GROUP_BY_OFF
GTWDEBUG
INCREMENT_CURSORS
DRDA_CALLDESC_STMT
DRDA_CALLDESC_PROC

16.4 Bind Gateway Package

When upgrading to 11g release you must rebind the gateway package if you have changed any of the following initialization parameters:

DRDA_DISABLE_CALL
DRDA_ISOLATION_LEVEL
DRDA_PACKAGE_COLLID
DRDA_PACKAGE_CONSTOKEN
DRDA_PACKAGE_NAME
DRDA_PACKAGE_OWNER
DRDA_PACKAGE_SECTIONS

16.5 Install/Upgrade Data Dictionary Views

You must install or upgrade the data dictionary views when upgrading the Oracle Database Gateway for DRDA. Refer to Chapter 14, "Configuring Oracle Database Gateway for DRDA" for more information on creating data dictionary views.