DB2 V6.1 , OS390 V2.8

Hi ,
I am having one of my bufferpools with HIT RATIO that is 0% most of the time.

Only one high usage TableSpace (32 partitions,each of PRIQTY 22320 & SECQTY 2232) containing only one table is allocated that BP.

The PLATINUM tool showed the following details for the BP .....

VP_ALLOC 20000K
HP_ALLOC 20000K
BUFHIT 0.00%
GETPAGE 169260
GETPAGE_SQ 0
SYNCRIO 9421
SYNCRIO_SQ 0
PF_REQ 17122
PF_IO 9799
PF_PGS 218395
PF_PIO 22.3
SPF_REQ 0
SPF_IO 0
SPF_PGS 0
SPF_PIO 0
LPF_REQ 0
LPF_IO 0
LPF_PGS 0
LPF_PIO 0
DPF_REQ 17122
DPF_IO 9799
DPF_PGS 218395
DPF_PIO 22.3
BUF_UPDATE 456
SYNCWIO 22
ASYWIO 67
ASYWIO_PGS 114
ASYWIO_PIO 1.7
PAGING_RIO 7
PAGING_WIO 0

Could someone help me out what is happening to this BP and what could be done to improve it.

Thanks.