[HP-UX] cannot fork: too many processes

./conn[12]: cannot fork: too many processes 

在HP Unix有兩個可以限制系統最大程式數的核心引數：maxuprc(max user processes)和nproc(the number of system processes);
maxuprc只對普通使用者生效，對root使用者不生效，只有nproc才對root生效。

kctune 命令可以檢視所有的核心引數
修改maxuprc核心引數命令.
kctune maxuprc+=500 (增加500)

[root@xxxxxxx:/#] kctune maxuprc+=500
     ==> Update the automatic 'backup' configuration first? y
       * The automatic 'backup' configuration has been updated.
       * Future operations will update the backup without prompting.
       * The requested changes have been applied to the currently
         running configuration.
Tunable            Value  Expression  Changes
maxuprc  (before)    256  Default     Immed
         (now)       756  756