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 —  Parameter Reference  —

VSIZE - Size of Buffer Area for Natural/VSAM

This Natural profile parameter sets the maximum size of the buffer area required by Natural for VSAM. If set to 0 or if the requested space is not available, the Natural VSAM interface cannot be used.

Possible settings 1 - 512 Buffer size in KB.

0 With VSIZE=0, the Natural VSAM interface cannot be used.
Default setting 0  
Dynamic specification yes  
Specification within session no  

Notes:

  1. This Natural profile parameter applies only if the Natural VSAM interface is installed.
  2. If Natural is installed for VSAM, the corresponding Natural buffers are requested at the initialization of the Natural session.
  3. If the requested space is not available, the Natural VSAM interface cannot be used. An appropriate error message at the initialization of the Natural VSAM interface tells you which buffer specified in the NTVSAM macro in the VSAM-specific parameter module NATPARM does not fit into the VSIZE area; you can then increase the size of the VSIZE area.
  4. If you do not need VSAM support during a Natural session, it is recommended that you invoke Natural with VSIZE=0 to avoid overhead caused by handling of unused buffers.

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