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摘要: grep-c 只打印匹配模式的行编号记数-I 在匹配文本时忽略大小写-n 在每行前显示其行编号-v 逆向输出,打印不匹配的行-f file 要匹配的字符串列表在filezhonggrep ‘[Tt]his’ file1.txt 设置大小写grep ‘^[^#]‘ file2.txt 不匹配行首gre... 阅读全文
posted @ 2015-07-27 17:25 seasonzone 阅读(204) 评论(0) 推荐(0) 编辑
摘要: 1. ftp自动登录批量下载文件。 #####从ftp服务器上的/home/data 到 本地的/home/databackup#####!/bin/bashftp -n<<!open 192.168.1.171user guest 123456binarycd /home/datalcd /hom... 阅读全文
posted @ 2015-07-01 11:13 seasonzone 阅读(529) 评论(0) 推荐(0) 编辑
摘要: http://www.it165.net/database/html/201208/2801.html有时要清除从库的所有复制信息,如切换为不同的Master, 主从重做等;Reset slave是一个比较危险的命令,所以在执行前一定要准备知道其含义。 1. 命令在slave上执行,执行前一定要停掉... 阅读全文
posted @ 2015-06-06 21:15 seasonzone 阅读(935) 评论(0) 推荐(0) 编辑
摘要: 一般我们在安装系统的时候,都会遇到服务器时间不同步的情况。所以必须得设置为中国时区,比较简单的方法,就总结如下几点:1.通过命令行启动图形界面更改#sysinstall请选择 configure请选择 Time ZoneUTC = no请选择 Asia请选择 China请选择 east China ... 阅读全文
posted @ 2015-06-02 11:09 seasonzone 阅读(1464) 评论(0) 推荐(0) 编辑
摘要: Basic Memory StructuresThe basic memory structures associated with Oracle Database include:System global area (SGA)The SGA is a group of shared memory... 阅读全文
posted @ 2015-05-29 14:36 seasonzone 阅读(235) 评论(0) 推荐(0) 编辑
摘要: States of Integrity ConstraintsAs part of constraint definition, you can specify how and when Oracle Database should enforce the constraint, thereby d... 阅读全文
posted @ 2015-05-18 13:46 seasonzone 阅读(212) 评论(0) 推荐(0) 编辑
摘要: Merging into a Table: ExampleThe following example uses the bonuses table in the sample schema oe with a default bonus of 100. It then inserts into th... 阅读全文
posted @ 2015-05-15 14:59 seasonzone 阅读(210) 评论(0) 推荐(0) 编辑
摘要: SET TRANSACTION NAME 'Update salaries';SAVEPOINT before_salary_update;UPDATE employees SET salary=9100 WHERE employee_id=1234 # DMLROLLBACK TO SAVEPOI... 阅读全文
posted @ 2015-05-15 14:35 seasonzone 阅读(684) 评论(0) 推荐(1) 编辑
摘要: Summary of Memory Management MethodsTable 18-1 summarizes the various memory management methods. If you do not enable automatic memory management, the... 阅读全文
posted @ 2015-05-06 15:29 seasonzone 阅读(153) 评论(0) 推荐(0) 编辑
摘要: 4.2.2 Automatic Tuning of Memory ManagementTwo memory management initialization parameters, MEMORY_TARGET and MEMORY_MAX_TARGET, enable automatic mana... 阅读全文
posted @ 2015-05-06 15:15 seasonzone 阅读(159) 评论(0) 推荐(0) 编辑
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