目录 Chapter 1 Installing the Solaris 10 Operating System 1 1.1 Methods to Meet Your Needs 1 1.2 The Basics of Solaris Installation 2 1.2.1 Installing Solaris on a SPARC System 6 1.2.2 Installing Solaris on an x86 System 9 1.3 Solaris JumpStart Instal
https://blogs.oracle.com/obieeTips/entry/solaris The following scr ipts are located in obisolaris.tar.gz (2013-07-12) obimon (0.1) - monitor memory and connection growth. pcore.sh (0.1) - miniture version of pstack.sh for Solaris, until we work out
Usage: ora [-u user] [-i instance#] [] General -u user/pass use USER/PASS to log in -i instance# append # to ORACLE_SID -sid set ORACLE_SID to sid -top # limit some large queries to on # rows - repeat Repeat an coomand time. Sleep between two
gdb 打印功能扩展 # The following STL containers are currently supported: # # std::vector -- via pvector command # std::list -- via plist or plist_member command # std::map -- via pmap or pmap_member command # std::multimap -- via pmap or pmap_member comma
pstack命令用来显示进程的栈跟踪。 pstack 命令必须由相应进程的属主或root账号运行。可以使用pstack来确定进程挂起的位置。此命令只有一个参数,那是pid,具体关于pstack的介绍可以查看man手册,如下所示:
[rootDB-Server ~]# man pstack
PSTACK(1) Linux Programmer’s Manual PSTACK(1)
NAME
pstack – print a
问题背景
周一上班,首先向同事了解了一下上周的测试情况,被告知在多实例场景下 MySQL Server hang 住,无法测试下去,原生版本不存在这个问题,而新版本上出现了这个问题,不禁心头一颤,心中不禁感到奇怪,还好现场环境还在,为排查问题提供了一个好的环境,随即便投入到紧张的问题排查过程当中。问题实例表现如下:
代码如下:
并发量为 384 的时候出现的问题;
MySQL 服务器无法执行事务相关的语句,即使简单的 select 语句也无法执行;
所有线程处于等待状态,无法 KILL。
现场