SQL 查询以显示 IBM Sterling B2B Integrator BPs 配置以及每个 PERSISTENCE_LEVEL 的含义。PERSISTENCE LEVEL 编码在 WFD（工作流定义）表中。
select name, wfd.EXECNODE, wfd.PRIORITY QUEUE, wfd.LIFE_SPAN,
wfd.PERSISTENCE_LEVEL PERSISTENCE_LEVEL_ID,
CASE PERSISTENCE_LEVEL
when 0 then 'SystemDefault'
when 1 then 'Full'
when 3 then 'StepStatusEMO'
when 4 then 'StartStopEMO'
when 5 then 'StepStatusOnly'
when 8 then 'StartStop'
when 9 then 'Zero'
when 10 then 'ErrorOnly'
else ''||persistence_level
END PERSISTENCE_LEVEL
from WFD wfd, wfd_versions wfdv
where wfd.WFD_ID=wfdv.WFD_ID and wfd.wfd_version = wfdv.WFD_VERSION
and wfd.WFD_VERSION=wfdv.DEFAULT_VERSION;
