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XCOM Data Transport - ZIIP Enablement Issue


Article ID: 238188


Updated On:


XCOM Data Transport - z/OS


Transferring a dataset from z/OS to another z/OS system, but the zIIP processor is not being utilized for the transfer. The system has a zIIP processor and the XCOM parameters are set to take advantage of the zIIP processor. Why isn't the zIIP processor being utilized for this transfer?  


The dataset being transferred has a RECFM=U and the data in that dataset is binary, so packing is not occurring. XCOM packing was designed to pack text or character data and not binary data. 


Release : 12.0

Component : XCOM Data Transport for z/OS


Binary data may only use the zIIP processor if the individual records are > than 4096 bytes. 

The requirements for the transfer to utilize the zIIP processor are:

1. The XCOM load library must be APF authorized

2. COMPRESS= must be set to anything other than NO

3. The buffer size must be > than 4096 bytes