解决方案：
HP Officejet 4255/4256、4338/4308、J3508/J3606/J3608
组合键：设置 + OK
此款机器在更换另一个墨盒时才会提示校笔。当液晶屏提示“Press OK to Print Align Page”时，左手先按住“设置”按钮，右手快速按一下 “O
--共享池中保留区的信息查询select * from v$shared_pool_reserved--查询hard parse比率select a.value as Total,b.value as "Hard Pase",round(b.value/a.value,2) as Ratiofrom v$sysstat a,v$sysstat bwhere a.name='parse count(
