prs- 与parse相关

prscnt number of times parse was called 语句解析的数目
prscpu cpu time parsing 语句解析所占用的CPU时间
prsela elapsed time parsing 语句解析所占用的时间（总是大于或等于CPU时间）；
prsdsk number of disk reads during parse 语句解析期间，从磁盘进行物理读取的数目
prsqry number of buffers for consistent read during parse 语句解析期间，一致模式块读取（CONSISTENT MODE BLOCK READ）的数目
prscu number of buffers for current read during parse 语句解析期间，当前模式读取（CURRENT MODE BLOCK READ）的数目
prsmis number of misses in library cache during parse 语句解析期间，库缓存失败的数目

exe- 与execute相关
execnt number of execute was called 语句执行的数目
execpu cpu time spent executing 语句执行所占用的CPU时间
exeela elapsed time executing 语句执行所占用的时间（总是大于或等于CPU时间）
exedsk number of disk reads during execute 语句执行期间，从磁盘进行物理读取的数目
exeqry number of buffers for consistent read during execute 语句执行期间，一致模式块读取（CONSISTENT MODE BLOCK READ）的数目
execu number of buffers for current read during execute 语句执行期间，当前模式读取（CURRENT MODE BLOCK READ）的数目
exerow number of rows processed during execute 语句执行期间，所处理的语句行数
exemis number of library cache misses during execute 语句执行期间，库缓存失败的数目

fct- 与fetch相关
fchcnt number of times fetch was called 取数据的数目
fchcpu cpu time spent fetching 取数据所占用的CPU时间
fchela elapsed time fetching 取数据所占用的时间（总是大于或等于CPU时间）
fchdsk number of disk reads during fetch 取数据期间，从磁盘进行物理读取的数目
fchqry number of buffers for consistent read during fetch 取数据期间，一致模式块读取（CONSISTENT MODE BLOCK READ）的数目
fchcu number of buffers for current read during fetch 取数据期间，当前模式读取（CURRENT MODE BLOCK READ）的数目
fchrow number of rows fetched 所获取的行数
userid userid of user that parsed the cursor