gtpd1m0z | Database Reference |
The maximum VFA trip value provides a way for VFA to force an ECB to give up control when the ECB is a heavy user of VFA records.
In TPFGBL there are two values, &MXVFARQ and &MXVFARS. The default value for both is 50. When an ECB is initialized, the maximum VFA trip counter is set to the value in &MFVFARQ. Every time a file, find, or enter/back request is completed in VFA, the VFA trip counter is decremented by 1. When the counter reaches 0, the ECB is forced to give up control on the next WAITC or implied wait. The VFA trip value is then reset using the value in &MXVFARS.