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From Rob Davies <>
Subject Re: ActiveMQ 4.1 Queue is full
Date Fri, 02 Mar 2007 05:48:03 GMT
The memory model is different for ActiveMQ 4.1 in that for Queues,  
only small references to the Queue messages are held in memory. This  
means that the Queue depth can be considerably bigger than for  
ActiveMQ 3.2.x.
However, our next major release (5.0 nee 4.2) has a more robust model  
in that Queue messages are paged in from storage only when space is  
available - hence Queue depth is now limited by how much disk space  
you have.


Rob Davies

On 2 Mar 2007, at 04:47, manav wrote:

> As many of you know, some of the previous versions of ActiveMQ,  
> specifically
> that I know of, ActiveMQ 3.2.1 had 'Queue is Full' error problem  
> where after
> some persistant messages are stored, the broker results in an error  
> 'queue
> is full' and consequently becomes unresponsive.
> How is this fixed in ActiveMQ4.1? Is this error guaranteed to not  
> happen?or
> could it happen after publishing a greater number of messages? or  
> could it
> happen at another time?
> We are asking this as we are considering upgrade due to the 'Queue  
> is full'
> problem with AMQ3.2.1, but would like to know how it is fixed in  
> the later
> releases esp 4.1.
> Thanks for any information or pointers..
> -- 
> View this message in context: 
> Queue-is-full-tf3331665s2354.html#a9263991
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