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Upgrading to WebSphere MQ for Linux Version 7.0

Upgrading to WebSphere MQ for Linux Version 7.0
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This section provides information about considerations for upgrading WebSphere® MQ for Linux®.

If you are upgrading from a previous version of WebSphere MQ for Linux, you must uninstall your current version before installing WebSphere MQ Version 7.0.

Because you cannot therefore revert to your previous level, back up your system before you install WebSphere MQ Version 7.0. This enables you to back out the upgrade if necessary. If you back out the upgrade, however, you cannot recover any work, such as changes to messages and objects, that WebSphere MQ Version 7.0 has done.
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WebSphere MQ for Linux Version 7.0 - zSeries platform 32-bit and 64-bit

You cannot upgrade from WebSphere MQ for Linux V6.0 (zSeries® platform) (32-bit) to WebSphere MQ for Linux zSeries s390x V7.0 (64-bit).
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WebSphere MQ for Linux, (x86 and x86-64 platforms) and 32-bit and 64-bit queue managers

You can install WebSphere MQ for Linux (x86 platform) on 32-bit and 64-bit versions of the Linux operating system. If you currently have 32-bit WebSphere MQ for Linux (x86 platform) Version 5.3 or Version 6.0 installed on a 64-bit version of the Linux operating system, you can install WebSphere MQ for Linux (x86 platform) or WebSphere MQ for Linux (x86-64) when you upgrade to WebSphere MQ for Linux, Version 7.0.

If you install the 64-bit version of WebSphere MQ for Linux (x86-64 platform), existing queue managers are migrated to 64-bit when they are started. When a queue manager is 64-bit, you cannot start it by using a 32-bit version of WebSphere MQ.

Upgrading from WebSphere MQ for Linux (x86 platform), Version 7.0 to WebSphere MQ for Linux (x86-64 platform) Version 7.0 is not supported.

Upgrading from WebSphere MQ for Linux (x86-64 platform) to WebSphere MQ for Linux (x86 platform) is not supported for any version.
The supported upgrade paths for previous versions of WebSphere MQ for Linux (x86 and x86-64 platforms) to WebSphere MQ for Linux Version 7.0 are as follows:
From: To:
WebSphere MQ for Linux, Version 5.3 (x86 platform) WebSphere MQ for Linux, Version 7.0 (x86 platform)

WebSphere MQ for Linux, Version 7.0 (x86-64 platform)
WebSphere MQ for Linux, Version 6.0 (x86 platform) WebSphere MQ for Linux, Version 7.0 (x86 platform)

WebSphere MQ for Linux, Version 7.0 (x86-64 platform)
WebSphere MQ for Linux, Version 6.0 (x86-64 platform) WebSphere MQ for Linux, Version 7.0 (x86-64 platform)
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See the following topics for information about how to migrate to WebSphere MQ for Linux Version 7.0.

* Upgrading to WebSphere MQ Version 7.0
Complete this task to migrate to WebSphere MQ Version 7.0, while retaining your WebSphere MQ data, and optionally upgrade your operating system to one supported by WebSphere MQ Version 7.0.
* Upgrading to WebSphere MQ Version 7.0 using RPM upgrade tools
The use of RPM upgrade tools, using the -U or -F flags, to upgrade is not supported.
* After you have upgraded to WebSphere MQ Version 7
You must perform certain tasks immediately after upgrading to V7.
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