How To Start Oracle?

To start or shut down Oracle Database:

  1. Go to your Oracle Database server.
  2. Start SQL*Plus at the command prompt: C:> sqlplus /NOLOG.
  3. Connect to Oracle Database with username SYSDBA: SQL> CONNECT / AS SYSDBA.
  4. To start a database, enter: SQL> STARTUP [PFILE=pathfilename]
  5. To stop a database, enter: SQL> SHUTDOWN [mode]

Contents

What is Oracle startup command?

To start up a database instance, you use the STARTUP command: STARTUP. When the Oracle Database starts an instance, it goes through the following stages: NOMOUNT , MOUNT , and OPEN . The STARTUP command allows you to control the stage of the database instance.

How do I connect to Oracle for the first time?

To connect to Oracle Database from SQL Developer:

  1. Access the menu from which you can select SQL Developer:
  2. Select Oracle – ORACLE_HOME.
  3. Select Application Development.
  4. Select SQL Developer.
  5. In the navigation frame of the window, click Connections.
  6. In the Connections pane, click the icon New Connection.

How do I open Oracle on my computer?

4.4 Connecting to an Oracle Database from a Client Computer

  1. (UNIX, Linux, or Windows systems) Open a command window and enter the following command: sqlplus.
  2. (Windows systems only) Click Start, select Programs (or All Programs), then Oracle – HOME_NAME, then Application Development, and then SQL*Plus.

How do I start Oracle client on Windows?

If you are unsure if your user ID is in the Administrator’s group, check User Accounts in Windows Control Panel. To start the installation, go to the Client installation directory and run SETUP. EXE to start Oracle Universal Installer. On the Select Installation Type page, choose Administrator.

How do I run Oracle?

Do one of the following:

  1. On Windows: Click Start, point to Programs (or All Programs), point to Oracle Database 11g Express Edition, and then select Start Database.
  2. On Linux with Gnome: In the Applications menu, point to Oracle Database 11g Express Edition, and then select Start Database.

How do you restart a database?

To start, stop, or restart an instance of the SQL Server Agent

  1. In Object Explorer, connect to the instance of the Database Engine, right-click SQL Server Agent, and then click Start, Stop, or Restart.
  2. If the User Account Control dialog box appears, click Yes.
  3. When prompted if you want to act, click Yes.

Is Oracle DB free?

Free Oracle Database for Everyone
You get an Oracle Database to use in any environment, plus the ability to embed and redistribute – all completely free!

How do I run Oracle 12c after installation?

Follow these steps:

  1. From the Start menu, select All Programs, then Oracle – HOMENAME, then Oracle Installation Products, then Universal Installer.
  2. In the Welcome window, click Installed Products to display the Inventory dialog box.
  3. To check the installed contents, find the Oracle Database product in the list.

Why do we need Oracle client?

Oracle Instant Client enables development and deployment of applications that connect to Oracle Database, either on-premise or in the Cloud. The Instant Client libraries provide the necessary network connectivity and advanced data features to make full use of Oracle Database.

How do I know if Oracle is running?

  1. Check the oracle process runs: On Un*x: ps -ef|grep pmon. On Windows: tasklist|findstr /i oracle.
  2. Go to ORACLE_HOME/bin and run: ./ sqlplus /nolog. If after login you get errors, then the database does not run: SQL*Plus: Release 11.2.0.1.0 Production on Sat Feb 31 21:61:61 2014 Copyright (c) 1982, 2014, Oracle.

How do I install Oracle on my computer?

Summary

  1. Download the Oracle database software.
  2. Install the Oracle database software in a Windows environment.
  3. Create a database containing example schemas.
  4. Verify the database installation.
  5. Connect to an Oracle instance using the SQL*Plus utility.
  6. Unlock and query the HR schema.

How do I start the Oracle listener?

To start or stop the listener at the command line:

  1. Open a command window.
  2. Follow the steps listed in “Configuring the Operating System Environment Variables .”
  3. Enter either of the following commands, depending on whether you want to start or stop the listener: lsnrctl start lsnrctl stop.

How do I open Oracle client?

To install Oracle Database Client perform the following steps:

  1. Log on as a member of the Administrators group to the computer to install Oracle components.
  2. Insert the Oracle Database Client installation media and navigate to the client directory.
  3. Double-click setup.exe to start Oracle Universal Installer.

How do I start and stop Oracle database in Windows?

To start or shut down Oracle Database:

  1. Go to your Oracle Database server.
  2. Start SQL*Plus at the command prompt: C:> sqlplus /NOLOG.
  3. Connect to Oracle Database with username SYSDBA: SQL> CONNECT / AS SYSDBA.
  4. To start a database, enter: SQL> STARTUP [PFILE=pathfilename]
  5. To stop a database, enter: SQL> SHUTDOWN [mode]

What is a Oracle client?

The Oracle Client is what connects your applications with your database. Almost all client side applications use it. Generally applications will either use the Oracle Client directly (such as our SQL tool Golden) or will use a connectivity option such as ODBC, OLEDB, .

Is Oracle easy to learn?

Oracle is fundamentally just like SQL Server and every other relational database system.It’s relatively easy to learn — as long as you have a good handle on Linux and SQL. If you have already learned SQL Server, then you can certainly learn Oracle databases.

How can I learn Oracle Database?

Learning to be an Oracle Database Administrator (DBA)

  1. Step 1 : Pick Your Starting Operating System Wisely.
  2. Step 2 : Consider Oracle Certification (OCP)
  3. Step 3 : Familiarize Yourself With Virtualization.
  4. Step 4 : Broaden Your Operating System Knowledge.
  5. Step 5 : Oracle on Linux.
  6. Step 6 : Automatic Storage Manager (ASM)

What is Oracle and how does it work?

An Oracle database server uses memory structures and processes to manage and access the database. All memory structures exist in the main memory of the computers that constitute the database system. Processes are jobs that work in the memory of these computers.

How do I start Oracle after shutdown immediate?

To start or shut down Oracle Database:

  1. Go to your Oracle Database server.
  2. Start SQL*Plus at the command prompt: C:> sqlplus /NOLOG.
  3. Connect to Oracle Database with username SYSDBA: SQL> CONNECT / AS SYSDBA.
  4. To start a database, enter: SQL> STARTUP [PFILE=pathfilename]
  5. To stop a database, enter: SQL> SHUTDOWN [mode]

How do I start SQL?

Here are the summarized tips, we learned in this article:

  1. Take your time and desire to learn SQL.
  2. Install a free version of a database and practice with it by yourself.
  3. Start with the basic queries.
  4. Read articles, watch online courses or buy a book.
  5. Try to write queries on your own.