View source for MQBUFSZ and UBUFSZ parameters

==Summary==
<dl>
<dt>Default value
<dd>1024 bytes
<dt>Parameter type
<dd>System
<dt>Where set
<dd>On User 0's parameter line, in the CCAIN parameters
<dt>Related products
<dd>All
<dt>Introduced
<dd><var class="product">Model 204 V4.2 ( UBUFSZ documented at V6.1 )</var> 
</dl>

==Description==
The <var>MQBUFSZ</var> and <var>UBUFSZ</var> parameters, which are aliases of each other, specify the default [[MQ/204 data conversion and handling#Data handling|Universal Buffer]] size. 
The Universal Buffer, or user buffer, is enlarged as needed, but you cannot make it smaller than the value of <var>UBUFSZ</var>. 

The physical size limit for the Universal Buffer is 2 gigabytes, and the minimum value for <var>UBUFSZ</var> is 0. 

The buffer is allocated only if referenced in a SOUL request. It is released when the user logs out.

[[Category:System parameters]]
[[Category:Parameters]]