.-SONLIM--=--(--60--,--30--)-------------------. >>-+----------------------------------------------+------------>< '-SONLIM--=--+-(--percent_1--,--percent_2--)-+-' +-(--percent_1--)---------------+ '-(--,--percent_2--)------------'
| range: | 1–99 |
Defines the maximum percentage of fixed I/O buffers available for the session outage notification (SON) request/response units.
VTAM® calculates the percent_1 number of buffers and the percent_2 value, using the values you specify as the percentage of the I/O buffers available for SON. These numbers are calculated when VTAM is started, and are not affected by any increase in the number of I/O buffers because of dynamic buffer expansion.
The session outage notification does not pre-allocate buffers. No I/O buffers are allocated until SON processing begins.
There are three allowed formats for coding start option
SONLIM:
- SONLIM=percent_1
- SONLIM=(percent_1 ,percent_2 )
- SONLIM=(,percent_2 )
- percent_1
- Specifies the percentage of the fixed I/O buffer pool that can be allocated for SON request units. VTAM calculates this percentage by using the percent_1 value and the baseno value coded for IOBUF. This is the maximum number of buffers that can be allocated for notification request units. If VTAM cannot initiate all the SON request units (one buffer is required for each request unit) within the available storage, it suspends the notification process until the number of buffers allocated for SON request units drops below the calculated threshold. Then the process begins again and more SON request units are generated.
- percent_2
- Specifies the percentage of fixed I/O buffers that are still allocated
to session outage notification request units when the notification
process begins again. After the number of buffers allocated to session
outage notification drops below the percent_2 value,
the process begins generating SON reports again. Note: The value of percent_2 must be less than the value of percent_1.