Troubleshooting issues in Oracle, RedHat Linux, Windows and lot more!.

If you are tired of using the Windows Classic theme on your Server 2008, you can install Desktop Experience so that you can enjoy the eye candy goodness of the Vista theme. Desktop Experience will also install Windows Media Player, Windows Sidebar and photo gallery. Follow these steps to install Desktop Experience and liven up your server: The Desktop Experience installs a variety of features, including Windows Media Player. It is required for the proper operation of Moxie Studio and Player on Windows Server 2008 and Windows Server 2008 R2. 1. Click Start and select Server Manager 2. When the Server Manager window appears, go to the left pane and select  Features . 3. On the right, click the  Add Features  link. 4. Check the  Desktop Experience  checkbox 5. Click Next. 6. Click Install 7. When the installation is complete, Windows will notify you that you must restart your server to complete the process. After you have rebooted, go to  Services  and m

Example syntax for Secure Copy ( scp ) What is Secure Copy? scp  allows files to be copied to, from, or between different hosts. It uses  ssh  for data transfer and provides the same authentication and same level of security as  ssh . Examples Copy the file "foobar.txt" from a remote host to the local host $ scp your_username@remotehost.edu:foobar.txt /some/local/directory Copy the file "foobar.txt" from the local host to a remote host $ scp foobar.txt your_username@remotehost.edu:/some/remote/directory Copy the directory "foo" from the local host to a remote host's directory "bar" $ scp -r foo your_username@remotehost.edu:/some/remote/directory/bar Copy the file "foobar.txt" from remote host "rh1.edu" to remote host "rh2.edu" $ scp your_username@rh1.edu:/some/remote/directory/foobar.txt \ your_username@rh2.edu:/some/remote/directory/ Copying the files "foo.txt" and &qu

Updated: April 7, 2010 Applies To: Windows Server 2008 R2 This document outlines supported and unsupported upgrade paths for editions of the Windows Server® 2008 R2 operating system. Unsupported Upgrade Scenarios Upgrades to Windows Server 2008 R2 from the following operating systems are not supported: Windows® 95, Windows 98, Windows Millennium Edition, Windows XP, Windows Vista®, Windows Vista Starter, or Windows 7 Windows NT® Server 4.0, Windows 2000 Server, Windows Server 2003 RTM, Windows Server 2003 with SP1, Windows Server 2003 Web, Windows Server 2008 R2 M3, or Windows Server 2008 R2 Beta Windows Server 2003 for Itanium-based Systems, Windows Server 2008 for Itanium-based Systems, Windows Server 2008 R2 for Itanium-based Systems Cross-architecture in-place upgrades (for example, x86 to x64) are not supported. Cross-language in-place upgrades (for example, en-us to de-de) are not supported. Cross-edition upgrades (for example, the Windows Server 2008 F

Windows Server 2008 R2 includes a command-line tool called the Deployment Image Servicing and Management tool, or DISM. It's functionally equivalent to the Windows Anytime Upgrade feature in client versions of Windows. You can run it from an elevated command prompt. To determine the currently installed edition: DISM /online /Get-CurrentEdition To determine the editions you can upgrade to: DISM /online /Get-TargetEditions To actually perform an upgrade: DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

desc dba_tablespaces select * from dba_tablespace_usage_metrics select * from dba_directories select * from user_tablespaces Select * from dba_data_files Select * from dba_free_space

Creating Tablespaces Before you can create a tablespace, you must create a database to contain it. The primary tablespace in any database is the  SYSTEM  tablespace, which contains information basic to the functioning of the database server, such as the data dictionary and the system rollback segment. The  SYSTEM  tablespace is the first tablespace created at database creation. It is managed as any other tablespace, but requires a higher level of privilege and is restricted in some ways. For example, you cannot rename or drop the  SYSTEM  tablespace or take it offline. The  SYSAUX  tablespace, which acts as an auxiliary tablespace to the  SYSTEM  tablespace, is also always created when you create a database. It contains information about and the schemas used by various Oracle products and features, so that those products do not require their own tablespaces. As for the  SYSTEM  tablespace, management of the  SYSAUX  tablespace requires a higher level of security and you cannot re

1. systeminfo - It will display all the system information in cmd line 2. set - will display all the environment variables 3. cmd  > filename.txt - will copy the output of the commands    eg: systeminfo > systeminfo_output.txt 4. Ping IP/Hostname - To check the machine available in network or not 5.PathPing IP/Hostname -  Helps to find the slow network routers are switch 6. nslookup ip/domainname - To find ip and domain name 7. ipconfig - To find the ip address of the system

1) Go to the Start Menu  2) Click on the Run   3) Type winver 4)Type systeminfo

If you need to upgrade a server running Windows Server 2008 R2 Standard to either the Enterprise, or Datacenter editions, it’s possible to do so online, without re-installing Windows. Open an elevated command prompt and type DISM /Online /Get-CurrentEdition.  This will return the current Windows version. Type DISM /Online /Get-TargetEditions to list the Windows editions to which this server can be upgraded. If you type DISM /Online /Set-Edition:ServerDataCenter you’ll get the message in the screenshot below.  This is because even if you’re using a KMS server for internal activation, you have to provide a product key.  Fortunately, Microsoft have a page that lists the KMS client setup keys  http://technet.microsoft.com/en-us/library/ff793421.aspx .  On this page you can find keys for Windows Server 2008 R2 Enterprise and Datacenter. Typing DISM /Online /Set-Edition:ServerDataCenter /ProductKey:xxxxxx will upgrade the operating system.  All that’s required to complete the

Windows Server 2008 R2 introduces a new command-line utility, DISM, the Deployment Image Servicing and Management tool.    One of DISM’s many useful features is the ability to use its edition-servicing commands to upgrade an R2 installation without requiring install media.  This is functionally equivalent to Windows Anytime Upgrade in a Windows 7 client install, and can be performed on both an online or offline image, and on both full Server and Server Core installations. Upgrades using the edition servicing method are quick, and don’t require a full reinstall of the operating system.  Deployed roles and features, and other characteristics (machine name, user and admin accounts, etc) are persisted forward.     Because the target editions are staged within the image, only the updates necessary to move from edition to the next are applied. The upgrade options are limited to edition families, and are irreversible – you can’t downgrade once you’ve gone up an edition.  Additionall

Oracle Network Configuration In its most basic form, Oracle uses three files (listener.ora, tnsnames.ora & sqlnet.ora) for network configuration. This article gives an example of each file as a starting point for simple network configuration. Assumptions Listener.ora Tnsnames.ora Sqlnet.ora Testing The example files below are relevant for an Oracle installation and instance with the following values. Parameter   Value HOST hostname ORACLE_HOME /u01/app/oracle/product/9.2.0 ORACLE_SID ORCL DOMAIN world Listener.ora The listerner.ora file contains server side network configuration parameters. It can be found in the "$ORACLE_HOME/network/admin" directory on the server. Here is an example of a listener.ora file from Windows 2000. LISTENER =   (DESCRIPTION_LIST =     (DESCRIPTION =       (ADDRESS_LIST =         (ADDRESS = (PROTOCOL = TC