lookup tables 详解
mysql运行一天 磁盘io负载很高 到94% 看了show processlist; 发现有closing table 执行很久 下面是当前的状态信息 看看是否有什么问题? mysql> SHOW GLOBAL STATUS; +----------------------------+-----------+ | Variable_name | Value | +----------------------------+-----------+ | Aborted_clients | 10 | | Aborted_connects | 457 | | Binlog_cache_disk_use ...
by Arthur_ - MySQL - 2013-05-03 11:42:34 阅读（1594） 回复（1）
Now we meet a problem, when we use one of the below: alter table services add foreign key (`Customer ID`) references `customer`.`Customer ID` on delete cascade or alter table services add foreign key (`Customer ID`) references customer(`Customer ID`) on delete cascade we get the error message: Error Code : 1005 Can't create table '.\pc\#sql-15b0_1.frm' (errno: 150) (0 ms taken) any ideas ? th...
输入，ftp -a ftp2.FreeBSD.org后显示，can't look up'' ftp.freebsd.org''ftp:hostname nor servername provided,or not known ftp>ftp2.freebsd.prg 本人新手，看不明白求大神帮助
hi， 我是freebsd初学者。通过U盘稀里糊涂地装在了笔记本上。起初遇到不能自动断电问题，后来不知道怎么就解决了。 然后现在的最大问题是，网络配置出了问题，无法上网,ping www.baidu.com host name lookuo failure,网线和插口应该没什么问题。具体情况如下： ifconfig re0：inet 192.168.0.1 netmask 0xfffff00 broadcast 192.168.0.255 status: active ping 127.0.0.1 有返回响应 ping 192.168.0.1有返回响应 dig ...
我部署好了项目后，写好客户端后运行test Properties props = new Properties(); props.setProperty("jndi.factory","com.sun.jndi.cosnaming.CNCtxFactory"); props.setProperty("org.omg.CORBA.ORBInitialHost","localhost"); props.setProperty("org.omg.CORBA.ORBInitialPort","3700"); Context ctx = new InitialContext(props); HelloRemote hr = (HelloRemote) ctx.lookup(HelloR...
比如目标机器名称为scocec IP为192.168.0.100 # ping scocec ping:Host name lookup failure:scocec #ping 192.168.0.100 No route to host 是什么原因
FreeBSD系统，Sendmail 服务。日志显示不能解析主机，单nslookup和ping都没有问题。请问这怎么解决？ 系统日志如下： Mar 20 17:08:23 nothing sm-mta[25808]: k2K89Uei025602: to=<[email]mountain@XXX.com.cn[/email]>, ctladdr=<[email]nobody@nothing.bsd.com[/email]> (65534/65534), delay=00:52:53, xdelay=00:01:00, mailer=esmtp, pri=211231, relay=mail.XXX.com.cn., dsn=4.0.0, stat=Deferred: Name server: mail.XXX....
#!/usr/bin/python # import platform, os, sys import dircache, re fix = ('192.168.0.1', 'username', 'password', 'V1') ext = ('192.168.0.1', 'username', 'password', 'V2') replaces = ( (re.compile('AUTO_INCREMENT=\d+'), 'AUTO_INCREMENT=1'), ) def show_tables(define): result = [] file = platform.popen('mysql -s --host=%s -u%s -p%s %s 文件:dbma.zip 大小:1KB 下载: 下载 ...
Inside ELF Symbol tables ELF files are full of things we need to keep track of for later access: Names, addresses, sizes, and intended purpose. Without this information, an ELF file would not be very useful. We would have no way to make sense of the impenetrable mass of octal or hexidecimal numbers. Consider: When you write a program in any language above direct machine code, you give symbolic na...
