| Author |
Message
|
| souciance |
 Posted: Sat Aug 24, 2013 6:16 am Post subject: MQ default queue properties |
 |
|
Disciple
Joined: 29 Jun 2010
Posts: 169
|
Hello..
Does anyone know if there is link on the InfoCenter where default values for all the possible queue values for all queue types are listed? Off course for those properties where default values can be provided..
Thanks. |
|
| Back to top |
|
 |
| fjb_saper |
| Posted: Sat Aug 24, 2013 6:52 am Post subject: Re: MQ default queue properties |
|
|
Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
|
| souciance wrote: |
Hello..
Does anyone know if there is link on the InfoCenter where default values for all the possible queue values for all queue types are listed? Off course for those properties where default values can be provided..
Thanks. |
The default values are copied from the corresponding type of the SYSTEM.DEFAULT.<TYPE>.QUEUE.
Have fun 
_________________
MQ & Broker admin |
|
| Back to top |
|
|
| bruce2359 |
| Posted: Sat Aug 24, 2013 7:03 am Post subject: |
|
|
Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
|
...and these values are 'initial values' not defaults. A default would magically be restored once changed and used. Not the case with object attribute values.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
|
| Back to top |
|
|
| souciance |
| Posted: Sat Aug 24, 2013 7:15 am Post subject: |
|
|
Disciple
Joined: 29 Jun 2010
Posts: 169
|
| Thanks, I will have to then investigate the System queues further. |
|
| Back to top |
|
|
| gbaddeley |
| Posted: Sun Aug 25, 2013 3:56 pm Post subject: Re: MQ default queue properties |
|
|
Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
|
| fjb_saper wrote: |
The default values are copied from the corresponding type of the SYSTEM.DEFAULT.<TYPE>.QUEUE.
Have fun |
MQ defines the SYSTEM.DEFAULT.x.x objects when the queue manager is created. After the queue manager has been created they can be altered to suit your own requirements, eg. the QLOCAL default MAXDEPTH 5000 might not be enough for some sites.
There is a point of argument that the "default defaults" should not be changed, and all new object define commands should specify values for attributes that deviate from the "default defaults". YMMV.
_________________
Glenn |
|
| Back to top |
|
|
| bruce2359 |
| Posted: Sun Aug 25, 2013 4:07 pm Post subject: |
|
|
Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
|
The SYSTEM.DEFAULT.x.x objects should have been called SYSTEM.TEMPLATE.x.x to indicate their primary purpose, namely: to supply attribute values when those attribute values are not not explicitly specified in a define command. They are used as templates.
They are not 'defaults.' For example, if your application attempts to open a queue object, but misspells the object name, the SYSTEM.DEFAULT.LOCAL.QUEUE will NOT be used as a default substitute.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
|
| Back to top |
|
|
| JosephGramig |
| Posted: Mon Aug 26, 2013 6:27 am Post subject: |
|
|
Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
|
| Not modifying the DEFAULT channels (inbound) leaves your Qmgr exposed from a security perspective. If you want to have a modicum of safety, you must modify the default objects. |
|
| Back to top |
|
|
| gbaddeley |
| Posted: Mon Aug 26, 2013 3:16 pm Post subject: Re: MQ default queue properties |
|
|
Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
|
| gbaddeley wrote: |
| There is a point of argument that the "default defaults" should not be changed, and all new object define commands should specify values for attributes that deviate from the "default defaults". YMMV. |
... except where the default defaults should be altered to reduce security risk and DoS exposures. 
eg. Section 6.4.2 Disable all incoming SYSTEM channels
in IBM Redbook "Secure Messaging Scenarios with WebSphere MQ" http://www.redbooks.ibm.com/abstracts/sg248069.html
_________________
Glenn |
|
| Back to top |
|
|
|
|
