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/etc/resolv.conf更改重启后自动恢复的解决办法

cuilihui — Thu, 22 Aug 2013 14:27:00 GMT

今天搭徏linux的DNS��M��服务器时遇到修改�?etc/resolv.conf之后�Q�重启系�l�或network后发现又恢复��C��前的状态。网上查了一下说是修�?br /> /etc/sysconfig/network-scripts/ifcfg-eth0 �?/span>��d��或修�?span style="color: #3d3d3d; font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; background-color: #ffffff;">PEERDNS=no�?br />但是service network restart发现�q�是自动恢复了，后来发现直接把dns服务器ip��d��?/span> /etc/sysconfig/network-scripts/ifcfg-eth0 ��没问题了，如下�Q?/span>

DEVICE="eth0"

BOOTPROTO=none

IPV6INIT="yes"

NM_CONTROLLED="yes"

ONBOOT="yes"

TYPE=Ethernet

IPADDR=192.168.1.12

PREFIX=24

DEFROUTE=yes

IPV4_FAILURE_FATAL=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_FAILURE_FATAL=no

NAME="System eth0"

UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03

GATEWAY=192.168.1.1

DNS1=192.168.1.12

DNS2=202.106.46.151

HWADDR=00:0c:29:da:0c:7d

IPV6_PEERDNS=yes

IPV6_PEERROUTES=yes

PEERDNS=no

注：DNS1和DNS2��是要在/etc/resolv.conf配置的dns服务器ip�?/div>

cuilihui 2013-08-22 22:27 发表评论

Sybase中bcp导入导出数据批处理文件的生成

cuilihui — Tue, 24 Apr 2012 06:16:00 GMT

从数据库中把所有表数据导出:
1.�~�辑一个文件selectout.sql�Q?nbsp;

set nocount on
use databasename
go
select 'bcp databasename..' + name + ' out d:\temp\' + name + '.txt -Uusername -Ppassword -Sservername -c ' from sysobjects where type='U'
go

2.在cmd中执行：

isql -Uusername -Ppassword -Sservername -i d:\selectout.sql -o d:\bcpout.bat

3.执行d:\bcpout.bat文�g, 可以把数据导出到d:\temp\目录�?nbsp;
把所有表数据导入到数据库�Ӟ��上面的out改�ؓin

4.bcp导入导出�Q?nbsp;
导出数据:

bcp DatabaseName.dbo.tableName out D:\tableName.txt -SServerName -Usa -P -c -b 10000

导入数据:

bcp DatabaseName.dbo.tableName in D:\tableName.txt -SServerName -Usa -P -c -b 10000

在导入大量数据时加上-b参数�Q�分�Ҏ(gu��)��交不以致于数据库日志被塞满�?/span>

cuilihui 2012-04-24 14:16 发表评论

sybase常用函数介绍

cuilihui — Fri, 20 Apr 2012 03:13:00 GMT

摘要: 长度和语法分�?nbsp;datalength(char_expr) 在char_expr中返回字�W�的长度��|��忽略�� substring(expression,start,length) �q�回部分字符�?nbsp;right(char_expr,int_expr) �q�回char_... 阅读全文

cuilihui 2012-04-20 11:13 发表评论

sybase学习�W�记

cuilihui — Thu, 19 Apr 2012 09:33:00 GMT

select isnull(convert(numeric(10,2), round(convert(numeric(10,0),x.ocr_file_num)/x.file_num * 100,2)),0)

from (select sum(total_file_num) as file_num,sum(auto_file_num) as ocr_file_num

from ws_ocr_report noholdlock

where tr_date>= '2012-03-31' and tr_date <='2012-03-31')x

numeric(10,0) 10位数�?��数点后0�?�Q?br />convert(numeric(10,0),x.ocr_file_num) 把x.ocr_file_num 转�ؓ��数点后0位的10位数字；
round(a,b) 保留数字a��数点后b位小敎ͼ�

select x.imp_type imp_type,isnull(y.un_auidted_num,0) un_auidted_num from

(select imp_type from imp_audit_type noholdlock where disp_sign=0 and tree_type=0 )x,(select imp_type,count(1) as un_auidted_num from imp_result noholdlock where 1=1

group by imp_type)y

noholdlock where x.imp_type *= y.imp_type order by x.imp_type

�{��h(hu��n)�?br />

select x.imp_type imp_type,isnull(y.un_auidted_num,0) un_auidted_num from

(select imp_type from imp_audit_type noholdlock where disp_sign=0 and tree_type=0 )x left join (select imp_type,count(1) as un_auidted_num from imp_result noholdlock where 1=1

group by imp_type)y

noholdlock on x.imp_type = y.imp_type order by x.imp_type

where x.imp_type *= y.imp_type order by x.imp_type 相当于��用join的on条�g�Q?br />

通过�?select �?readtext 命��o中将 holdlock、noholdlock �?shared 选项应用到单个表来替换某个会话的锁定�U�别�Q?/div>

使用�U�别关键�? 作用

1 noholdlock 直到事务�l�束再持有锁�Q�在�U�别 3 使用以强制执行��?1

2, 3 holdlock 持有�׃�n锁直��C��务完成；在��?1使用以强制执行��?3

�? shared 在�ؓ更新操作打开游标�Ӟ��?select语句应用�׃�n锁而非更新�?/div>
批处理：

bcp db..ds_aptr in f:/ftproot/dataSource/20120418\ABIS-APTR-1G-20120418 -e E:\DataManager\error\ds_aptr20120418.txt -c -t"|!" -r"\n" -Uad -Shn -Pbj -Jcp936 -b10000
ds_aptr数据�? in导入 f:/ftproot/dataSource/20120418\ABIS-APTR-1G-20120418
-e E:\DataManager\error\ds_aptr20120418.txt 错误日志
-t"|!" 以|�Q��ؓ列的分隔�W?br />-r"\n" 以\n��Z��条数据的分隔�W?br />-Uad 用户名ad
-Shn 服务器hn
-Pbj 密码bj
-Jcp936 �~�码cp936
-b10000 分批10000条提�?br />

cuilihui 2012-04-19 17:33 发表评论