Home Database Mysql Tutorial 用UNIX的kill命令来终止所有的Oracle过程

用UNIX的kill命令来终止所有的Oracle过程

Jun 07, 2016 pm 04:52 PM
oracle

正如你所知,有时候我们有必要终止所有的Oracle过程(process)或者指定的一组Oracle过程。当数据库ldquo;锁定rdquo;而你无法进

正如你所知,有时候我们有必要终止所有的Oracle过程(process)或者指定的一组Oracle过程。当数据库“锁定”而你无法进入Server Manager来“温柔”的终止数据库时,就可以用UNIX中的kill命令来终止所有的Oracle过程——这是kill命令的常见用途之一。

当你需要终止一个UNIX服务器上的一个Oracle实例(instance)时,执行下面的步骤:

终止与ORACLE_SID有关的所有Oracle过程。

用ipcs –pmb命令来识别所有占用的RAM内存片断。

用ipcrm -m 命令来从UNIX中释放占用的RAM内存。

只对Non-AIX:用ipcs -sa命令来显示占用标记,,用ipcrm –s命令来释放该实例的占用标记。

创建单一命令来终止与挂起(hung)的数据库实例有关的Oracle过程是很简单的。在下面的例子之中,我们用ps指令来识别Oracle过程,然后用 awk程序来获取Oracle过程的过程ID(process ID,PID)。然后,我们把过程ID输入到UNIX的kill命令之中。

root> ps -ef|grep ora_| \
grep -v grep|awk '{print $2}'|xargs -i kill -9 {}

在终止所有Oracle过程之后,我们可以用ipcs –pmb指令来检查占用的内存并清除数据库所占用的内存。我们首先显示出数据库服务器上所有占用内存:

root> ipcs -pmb

IPC status from /dev/kmem as of Mon Sep 10 16:45:16 2001
T ID KEY MODE OWNER GROUP SEGSZ CPID LPID
Shared Memory:
m 24064 0x4cb0be18 --rw-r----- oracle dba 28975104 1836 23847
m 1 0x4e040002 --rw-rw-rw- root root 31008 572 572
m 2 0x411ca945 --rw-rw-rw- root root 8192 572 584
m 4611 0x0c6629c9 --rw-r----- root root 7216716 1346 23981
m 4 0x06347849 --rw-rw-rw- root root 77384 1346 1361

在这里,我们看到Oracle只拥有一个ID=24064的RAM内存。下面的命令将会释放这个内存片断:

root> ipcrm -m 24064

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