Before you install
WebSphere® MQ Version 6.0,
you must check that your system meets the hardware and operating system software
requirements set for this product and the particular components you intend
to install on it.
Note: WebSphere MQ does
not support host names that contain spaces. If you install WebSphere MQ on
a computer with a host name that contains spaces, you will be unable to create
any queue managers.
Hardware
WebSphere MQ for AIX®, Version 6.0 runs
on any machine that supports the AIX5L V5.2 or AIX5L V5.3 operating systems
capable of running 64-bit programs whether from IBM® or other vendors.
Operating System
The operating systems supported by
WebSphere MQ for AIX, Version 6.0 are:
- AIX5L V5.2 (plus maintenance Level 3)
- AIX5L V5.3
Use the oslevel -r command to determine
the level of the operating system you are running, including the maintenance
level.
Connectivity Requirements
Check that the system has
64-bit compatible communications hardware that supports at least one of the
following:
- TCP/IP
- SNA LU6.2: If you want to use the SNA LU6.2 support on WebSphere MQ you
need the IBM Communications
Server for AIX Version
6.1.
UDP is no longer supported, existing channels should either be deleted
or migrated to one of the supported protocols listed above. To migrate UDP
channels to an alternative protocol alter the channel TRPTYPE attribute. For
information about this channel attribute see the Intercommunication book.
Storage Requirements
The storage requirements for the
WebSphere MQ for AIX, Version 6.0 depend on which components you
install, and how much working space you need. This, in turn, depends on the
number of queues that you use, the number and size of the messages on the
queues, and whether the messages are persistent. You also require archiving
capacity on disk, tape or other media. The approximate amount of storage space
required for a server installation is detailed in the table below.
Table 1. Storage requirements for a WebSphere MQ clientStorage Requirements |
Storage Requirement in MB in /opt |
WebSphere MQ Client installation |
276 |
You can use the df command to determine the amount of free space on
your system.
Disk storage is also required for
- Prerequisite software
- Optional software
- Your application programs
File descriptors
When running a multi-threaded process
such as the agent process, you might reach the soft limit for file descriptors.
This gives you the
WebSphere MQ reason code
MQRC_UNEXPECTED_ERROR
(2195) and, if there are enough file descriptors, a
WebSphere MQ FFST™ file.
To
avoid this problem, you can increase the process limit for the number of file
descriptors. To do this, alter the nofiles attribute in /etc/security/limits to
10,000 for the mqm user id or in the default stanza. For
information about the mqm user id see, Setting up the user ID and group ID.
System Resource Limits
Set the system resource limit
for data segment and stack segment to unlimited using the following commands
in a command prompt:
unlimit -d unlimited
unlimit -s unlimited