linux limit限制

查看 ulimit -a /etc/profile ~/.bash_profile /etc/security/limit.conf /etc/security/limit.d/20-nproc.conf 优先级(网上说法)： 1./etc/security/limit.d/20-nproc.conf 2./etc/security/limit.conf 3.~/.bash_profile 4./etc/profile 优先级(我个人理解)（bash_profile里的类似每次切换用户临时生效，所以高于持久化生效）： 1.~/.bash_profile 2./etc/profile 3./etc/security/limit.d/20-nproc.conf 4./etc/security/limit.conf 1.常规 编辑/etc/security/limits.conf 添加如下内容： vi /etc/security/limits.conf  grid soft nproc 2047 grid hard nproc 16384 grid soft nofile 1024 grid hard nofile 65536 oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 2.99 20文件（优先级高于上面的limits.conf） Linux6: /etc/security/limits.d/90-nproc.conf Linux7: /etc/security/limits.d/20-nproc.conf 3.oracle-database-preinstall-19c.conf文件 一般19c有，位置也在 /etc/security/limits.d/下，用sqlplus startup起会用这个的限制 # oracle-database-preinstall-19c setting for nofile soft limit is 1024 oracle   soft   nofile    1024 # oracle-database-preinstall-19c setting for nofile hard limit is 65536 oracle   hard   nofile    65536 # oracle-database-preinstall-19c setting for nproc soft limit is 16384 # refer orabug15971421 for more info. oracle   soft   nproc    16384 # oracle-database-preinstall-19c setting for nproc hard limit is 16384 oracle   hard   nproc    16384 # oracle-database-preinstall-19c setting for stack soft limit is 10240KB oracle   soft   stack    10240 # oracle-database-preinstall-19c setting for stack hard limit is 32768KB oracle   hard   stack    32768 # oracle-database-preinstall-19c setting for memlock hard limit is maximum of 128GB on x86_64 or 3GB on x86 OR 90 % of RAM oracle   hard   memlock    474620572 # oracle-database-preinstall-19c setting for memlock soft limit is maximum of 128GB on x86_64 or 3GB on x86 OR 90% of RAM oracle   soft   memlock    474620572 # oracle-database-preinstall-19c setting for data soft limit is 'unlimited' oracle   soft   data    unlimited # oracle-database-preinstall-19c setting for data hard limit is 'unlimited' oracle   hard   data    unlimited