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2022-7-2 |

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Total found 301 articles .

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電 腦 技 術 2015-1-27 8:49:49

Fix MySQL connection error – Host ” is blocked because of many connection errors


If you get a MySQL error like: Host '' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'   This most likely means your PHP / Java whatever program........



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電 腦 技 術 2015-1-26 23:24:21

How Do I Flush My DNS Cache?

If you are having problems on your PC, Laptop or Server getting to a website or another address then your support department may often ask if you have “flushed your DNS cache”. When you go to a websit........



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電 腦 技 術 2015-1-26 22:05:57

PHP - APC module Web Cache


PHP APC加速器安裝與配置 APC全稱是Alternative PHP Cache,官方翻譯叫”可選PHP緩存”,它是PHP PECL中的一個擴展,好像是facebook在使用它,下面開始安裝(debian環境):  $wget http://pecl.php.net[bbcode_........



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電 腦 技 術 2015-1-26 19:20:37

Windows Server 2012 - Configuring Active Directory Recycle Bin

Active Directory Recycle Bin feature is a Long-Awaited to recover accidentally deleted Active Directory objects without restoring Active Directory data from backups, restarting Active Directory Domain........



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電 腦 技 術 2015-1-26 19:19:11

Windows Server 2012 - Creating a Fine –Grained Password Policy


In Windows Server 2012, fine-grained password policy management is made much easier than Windows Server 2008/2008 R2. Windows Administrators not have to use ADSI Edit and configure complic........



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電 腦 技 術 2015-1-26 19:15:31

Windows Server 2012 - Converting from a Server Core to Server with GUI


In Windows Server 2012/ 2012 R2, you can convert Server Core to Server with a GUI or Server with a GUI to Server Core without reinstalling the entire operating system as in the previous ve........



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視 訊 2015-1-24 21:33:24

任天堂紅白機遊戲

你又玩過幾多? ........



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電 腦 技 術 2015-1-24 15:48:50

Exchange 2013 - DAG Replication testing


Exchnage DAG health checking 程式指令旨在用來主動監視連續複寫和連續複寫管線、Active Manager 的可用性,以及基礎叢集服務、仲裁及網路元件的健全狀況和狀態。Test-ReplicationHealth Cmdlet 可以在本機或在遠端針對 DAG 中任何的信箱伺服器執行。***........



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網 絡 技 術 2015-1-23 21:13:12

Fortigate - GRE tunnel configration


config system gre-tunnel     edit "tunnelname"         set interface "wan1"         set local-gw 192.168.10.13 &........



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生 活 國 度 2015-1-21 20:06:04

MySQL block host connection

近幾天發現網站其中一部伺服器出現500  Error,馬上查了下LOG, 出現"ERROR 1129: Host 'localhost' is blocked because of many connection errors.",這代表mysqld已經得到了大量(max_connect_errors)的主機'hostname'在中途被中斷了的........



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電 腦 技 術 2015-1-21 19:53:22

MySQL max_connections


設置max_connections 設置辦法是在my.cnf文件中,添加下面的最後紅色的一行: [mysqld] port=3306 #socket=MySQL skip-locking set-variable = key_buffer=16K set-variable = max_allowed_packet=1M set-variable = thread_s........



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生 活 國 度 2015-1-20 18:59:33

Nimble Storage EXAM


Passed. ........



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程 式 語 言 2015-1-18 22:34:47

PHP - Install CURL on linux platform


To check it please follow this step: Create a file in your web server (in Ubuntu it would be in /var/www folder), name it info.php Open that file and type this command: ........



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電 腦 技 術 2015-1-18 18:02:32

Windows Server 2012 and Windows 8 install .NET 3.0

Windows 8 Dism /online /enable-feature /featurename:NetFx3 /All /Source:f:\sources\sxs /LimitAccess ........



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電 腦 技 術 2015-1-18 14:11:02

Telnet output to a file


telnet "192.168.1.1" -f "d:\file.txt" ........



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生 活 國 度 2015-1-18 12:21:41

PC upgrade firmware - bit locker startup USB not working.


尋晚將部PC upgrade 完firmware, 點知一BOOT機認唔返隻Bit Locker startup usb,最後要用RECOVERY KEY解密先入得返Windows, 再REGEN過隻startup usb key,又正常返,真係第一次見。........



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生 活 國 度 2015-1-16 2:33:18

Hyper-V 2012 幾經波折


攪左幾日HyperV 2012, Dymanic Disk轉Fixed Disk, 又抄SNAPSHORT,又唔夠位CLONE, 又死AD, CLSUTER又起唔到,REBOOT完又BOOT唔起部HyperV, 最後幾經辛苦,終於全部攪掂哂。真係要倒秋一口涼氣。 ........



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生 活 國 度 2015-1-15 15:28:13

ISP轉IP


返到屋企睇MYTV,上網經常BUFFEE,己經覺得有古怪,CHECK下自己個IP,原來走左Backup ISP 3G 上網,入返隻ROUTER SET返IPSLA echo IP, Firewall source NAT, DNS parking,最後正常返晒,又攪左成粒鐘,其實個IP都用左有兩年,希望ISP唔好再RESET我個IP。........



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電 腦 技 術 2015-1-14 23:44:31

Exchange 2013 - Client Access Server High Availability


In an Exchange Server 2013 organization where high availability is a requirement you need to consider both the Client Access and the Mailbox server roles. Although a Database Availability Group can p........



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電 腦 技 術 2015-1-14 23:29:25

Exchange 2013 - Reset user password in ECP


Exchange 2013, you can reset user password via the browser, also known as EAC. Let me introduce you the RBAC ! You heard of it, but have you ever use it? You should ! OK, let’s get started ! 1:&n........



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