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Space announcement This space now contains the documentation for all the following components:
  • CHANGE ACCUMULATION PLUS
  • IMAGE COPY PLUS
  • RECOVERY MANAGER for IMS
  • RECOVERY PLUS for IMS
We are no longer updating the individual documentation spaces for these components. For the latest documentation, see BMC AMI Backup and Recovery for IMS 5.2.

Output data set buffer pool size

The utility dynamically allocates an optimum number of output buffers for change accumulation and image copy data sets based on the physical device and block size used.


Related topics

Output-data-sets

All buffers are allocated above the 16 MB line. If you are creating multiple copies of an output data set, one set of buffers is allocated and is shared by the various copies.

In previous versions of the utility, the CABUF and ICBUF keywords were used to control the buffer pool size. These keywords are still accepted if they are specified with a valid value on a control statement or in an options module, but their values are ignored.

If you explicitly specify a buffer pool size on the output image copy data set DD statement (with the DCB=BUFNO=n parameter), the utility ignores the specification.

 

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BMC AMI Backup and Recovery for IMS 5.1