John, I this is the only way documented. See below (taken from
http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/index.jsp?topic=/com.ibm
.mq.csqsav.doc/csq83bt.htm):

Refreshing queue manager security
When a queue is opened for the first time (or for the first time since a
security refresh) WebSphere MQ performs a RACF(R) check to obtain the user's
access rights and places this information in the cache. The cached data
includes user IDs and resources on which security checking has been
performed. If the queue is opened again by the same user the presence of the
cached data means WebSphere MQ does not have to issue RACF checks, which
improves performance. The action of a security refresh is to discard any
cached security information and so force WebSphere MQ to make a new check
against RACF. Whenever you add, change or delete a RACF resource profile
that is held in the MQADMIN, MQPROC, MQQUEUE, or MQNLIST class, you must
tell the queue managers that use this class to refresh the security
information that they hold. To do this, issue the following commands: 

The RACF SETROPTS RACLIST(classname) REFRESH command to refresh at the RACF
level. 
The WebSphere MQ REFRESH SECURITY command to refresh the security
information held by the queue manager (described in the WebSphere MQ Script
(MQSC) Command Reference manual). This command needs to be issued by each
queue manager that accesses the profiles that have changed. If you have a
queue-sharing group, you can use the command scope attribute to direct the
command to all the queue managers in the group.
If you are using generic profiles in any of the WebSphere MQ classes, you
must also issue normal RACF refresh commands if you change, add, or delete
any generic profiles. For example, SETROPTS GENERIC(classname) REFRESH.

However, because WebSphere MQ utilizes the RACF dataspace, WebSphere MQ can
use RACF profiles as soon as they become available. If a RACF resource
profile is added, changed or deleted and the resource to which it applies
has not yet been accessed (so no information is cached), WebSphere MQ will
use the new RACF information without a security refresh being carried out.



| Itschak Mugzach | Director | SecuriTeam Software |
| Email: [EMAIL PROTECTED] | Mob: +972 522 986404 | Skype: Itschak
Mugzach | Web: www.Securiteam.co.il  | 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of McKown, John
Sent: Tuesday, July 15, 2008 2:53 PM
To: [email protected]
Subject: Re: MQ security

> -----Original Message-----
> From: IBM Mainframe Discussion List
> [mailto:[EMAIL PROTECTED] On Behalf Of Roger Lowe
> Sent: Monday, July 14, 2008 6:07 PM
> To: [email protected]
> Subject: Re: MQ security
> 
> >
> >I did for one user and asked her to try again. No help.
> >
> When you do a RL MQQUEUE QZP1.** ALL G, are you definitely seeing the 
> userid and/or group in the access list with UPDATE?
> 
> Roger

For whatever reason (I'm not trained in RACF), despite the fact that the
MQQUEUE class is not RACLIST'ed, I had to do a SETR RACLIST(MQQUEUE)
REFRESH, followed by the MQ REFRESH SECURITY(MQQUEUE) command. There is
nothing in the MQ book about doing this. 

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage Administrative Services Group
Information Technology

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