The TSS MODIFY STATUS(SECCACHE) shows the DATA SIZE using a certain percentage. This means that there is still space available; yet the NOSPACE parameter shows a fairly large number.
TSS1354I ------------ SECCACHE STATISTICS ------------
TSS1355I Data Size 0536870912 In Use 0435629848 % Used 081
TSS1356I Index Size 0000010000 In Use 0000001877 % Used 018
TSS1357I SHR Wait 0000000000 EXCL Wait 0000000000
TSS1358I Gets 0000025476 Satisfied 0000016534 % Found 064
TSS1359I Adds 0000003977 Deletes 0000000000 Exp Hrs 000
TSS1360I NOSPACE 0000004937 NOINDEX 0000000000 Warn % 090
TSS1361I Low Rcd 0000000960 High Rcd 0000722168 Avg Rcd 0000229751
NOSPACE shows the number of data area allocation requests failing due to no available space.
It is normal and expected that NOSPACE shows entries, because the available DATA SPACE is fragmented and the space to hold a record must be in one piece.
It is common to see the NOSPACE number rise. When the DATA SIZE percent used hits about 80%, there are no longer any large available spaces in one piece. Smaller entries will still fit and the percent used will start to creep.
Please refer to the CA Top Secret Control options Guide for more details about SECCACHE control option.