2 Release Information

This chapter contains information that is specific to this release of the gateway. It contains the following sections:

Changes and Enhancements
Known Problems for 11g
Known Restrictions for 11g

2.1 Changes and Enhancements

The following changes and enhancements apply to this release of Oracle Database Gateway for WebSphere MQ.

2.1.1 Changes and Enhancements

The following sections describe the changes and enhancements included in this release.

2.1.1.1 Oracle Database Dependencies

This release of Oracle Database Gateway for WebSphere MQ requires the latest released patch set for Oracle Database 11g release 2 (11.2.0), or for the Oracle database release that you are using.

2.1.1.2 Support for Large Data Buffers

The PL/SQL RAW data type limitation is 32 KB (32767) bytes. For large loads, you must use the TABLE OF RAWS data type. For more information about support for large data buffers, refer to Appendix A.

2.1.1.3 DG4MQ Data Types

The following table provides information about Oracle Database Gateway for WebSphere MQ (DG4MQ) data types.

Data Type	V401	V804	V817 and V901	Oracle10g Release 2 and higher
`MQOD`	`PGM.MQOD@dblink`	`PGM.MQOD`	`PGM.MQOD`	`PGM.MQOD`
`MQMD`	`PGM.MQMD@dblink`	`PGM.MQMD`	`PGM.MQMD`	`PGM.MQMD`
`MQPMO`	`PGM.MQPMO@dblink`	`PGM.MQPMO`	`PGM.MQPMO`	`PGM.MQPMO`
`MQGMO`	`PGM.MQGMO@dblink`	`PGM.MQGMO`	`PGM.MQGMO`	`PGM.MQGMO`
`MQODRAW`	NA	`PGM.MQODRAW`	`PGM8.MQODRAW`	NA
`MQMDRAW`	NA	`PGM.MQMDRAW`	`PGM8.MQMDRAW`	NA
`MQPMORAW`	NA	`PGM.MQPMORAW`	`PGM8.MQPMORAW`	NA
`MQGMORAW`	NA	`PGM.MQGMORAW`	`PGM8.MQGMORAW`	NA

2.1.1.4 PGM_UTL Procedures

The following table provides information about PGM_UTL procedures.

Procedure	V401	V804	V817 and V901	Oracle10g Release 2 and higher
`TO_RAW`	NA	`PGM_UTL.TO_RAW`	`PGM_UTL8.TO_RAW`	`PGM.TO_RAW`
`RAW_TO_MQMD`	NA	`PGM_UTL.RAW_TO_MQMD`	`PGM_UTL8.RAW_TO_MQMD`	`PGM.RAW_TO_MQMD`
`RAW_TO_MQPMO`	NA	`PGM_UTL.RAW_TO_MQPMO`	`PGM_UTL8.RAW_TO_MQPMO`	`PGM.RAW_TO_MQPMO`
`RAW_TO_MQGMO`	NA	`PGM_UTL.RAW_TO_MQGMO`	`PGM_UTL8.RAW_TO_MQGMO`	`PGM.RAW_TO_MQGMO`

Note:

For Oracle10g release 10.2.0, the PGM.TO_RAW, PGM.RAW_TO_MQMD, PGM.RAW_TO_MQPMO and PGM.RAW_TO_MQGMO procedures are added for backward compatibility.

2.1.1.5 DG4MQ API Prototype Changes

The following table provides information about DG4MQ application programming interface changes.

API	V401 Arguments	V804 Arguments	V817 & V901 Arguments	10g Release 2 and higher Arguments
`MQOPEN`	`(MQOD,INT,INT)`	`(RAW,INT,INT)`	`(RAW,INT,INT)`	`(PGM.MQOD,INT,INT)`
`MQPUT`	`(INT,MQMD,MQPMO,RAW)`	`(INT,RAW,RAW,RAW)`	`(INT,RAW,RAW,RAW)`	`(INT,PGM.MQMD,PGM_MQPMO,RAW) or (INT, PGM.MQMD, PGM_MQPMO, PGM.MQPUT_BUFFER)`
`MQGET`	`(INT,MQMD,MQGMO,RAW)`	`(INT,RAW,RAW,RAW)`	`(INT,RAW,RAW,RAW)`	`(INT,PGM.MQMD,PGM_MQGMO,RAW) or (INT, PGM.MQMD, PGM.MQGMO, PGM_MQGET_BUFFER)`
`MQCLOSE`	`(INT,INT)`	`(INT,INT)`	`(INT,INT)`	`(INT,INT)`

Refer to Appendix A for the details of APIs.

2.1.1.6 DG4MQ Deployment Scripts

The following scripts are new in this release:

pgm.sql
pgmobj.sql
pgmdeploy.sql
pgmundeploy.sql

The gateway procedures in the PGM package are defined in pgm.sql and PGM_MQ* data type definitions used by the procedures are defined in pgmobj.sql. For complete information about PGM package, DG4MQ gateway procedures and data type definitions, refer to Appendix A.

2.1.1.7 Large Payload Support

DG4MQ 11g supports large payloads or messages longer than 32767 bytes. For more information, refer to the putlongsample.sql and getlongsample.sql sample programs installed with the DG4MQ.

2.1.1.8 Database Link and Alias Library

A connection to the gateway is established through a database link. From DG4MQ 10g release 2 and later, this database link is no longer associated with each DG4MQ gateway procedural call (for example, PGM.MQPUT@dblink). From 10g release 2 and later, it needs to be defined only once in the MQOD data type used by MQOPEN, and this database link is registered in the object handle returned by the MQOPEN call. Refer to the sample programs installed with the gateway for details. By default, a public database link, dg4mqdepdblink, is created with your default SID when DG4MQ deployment scripts are executed.

2.2 Known Problems for 11g

The problems documented in this section are specific to the Oracle Database Gateway for WebSphere MQ and are known to exist in this release of the product. These problems will be fixed in a future gateway release. If you have any questions or concerns about these problems, contact Oracle Support Services.

A current list of problems is available online. Contact your local Oracle office for information about accessing this online information.

2.3 Known Restrictions for 11g

The following restriction is known to exist for this release.

Customizing LOG_DESTINATION

There is a known issue when customizing the gateway initialization file for gateway tracing for Microsoft Windows platform. When customizing the path name of LOG_DESTINATION, the delimiter must be double backslashes. For example:

LOG_DESTINATION=C:\\oracle\\product\\11.2\\dg4mqs\\dg4mq\\log\\dg4mqs.log

Note:

If LOG_DESTINATION is not defined for Microsoft Windows platform, a default name is used and the log is created in ORACLE_HOME\dg4mq\trace directory

Customizing deployment script pgmobj.sql

There is a known issue when customizing the gateway deployment script pgmobj.sql for Microsoft Windows platform. When defining the path name of libdg4mq, the delimiter must be backslashes. For example create or replace library libdg4mq as:

CREATE OR REPLACE LIBRARY libdg4mq as 'C:\oracle\product\11.2\dg4mqs\bin\oradg4mqs.dll' transactional

CREATE OR REPLACE LIBRARY libdg4mq as '$ORACLE_HOME\bin\oradg4mqs.dll' transactional

CALLBACK links

Oracle Database Gateway for WebSphere MQ does not support CALLBACK links. Trying a CALLBACK link with the gateway will return the following error message:

ORA-02025: All tables in the SQL statement must be at the remote database