This Natural profile parameter is applicable under z/OS only (not for Com-plete).
It specifies the type of storage for the buffer pool cache of a local
Natural buffer pool. It corresponds to the C64 subparameter of the BPI profile parameter or
NTBPI
macro.
| Possible settings | ON |
This indicates that virtual storage above the 2 GB line is to be used for the buffer pool cache. |
|---|---|---|
OFF |
This indicates that a data space is to be used for the buffer pool cache. | |
| Default setting | OFF |
|
| Dynamic specification | yes | This parameter can only be specified dynamically. |
| Specification within session | no |
The BPC64 parameter only applies to the primary Natural buffer pool
(TYPE=NAT,
SEQ=0). In
the case of a global buffer pool, it is ignored. If there is a primary buffer
pool with SEQ=0 in NATPARM, only the C64
setting of this buffer pool is updated.
In multi-user environments (for example, under CICS), the BPC64 profile parameter only affects the very first Natural session which initializes the local buffer pool.
Internally, the BPC64 specification is converted into the equivalent BPI specification.
BPC64=ON |
is converted into: |
BPI=(TYPE=NAT,SEQ=0,C64=ON) |
For general information on the Natural Buffer Pool, see Natural Buffer Pool in the Operations documentation.
