Sql plus скачать для windows 10

SQLplus is a command line utility to manage Oracle Database. It is a powerful tool that all Oracle database administrator must have. In this tutorial, I am going to install the SQLplus Utility 9.5 in Windows 10. The new version of sqlplus 19.5 is available alongside the new Oracle Database 19c. On the previous article, I have shown how to install Oracle Database 19c on CentOS 8.

Once the connection is made between the client and the server using sqlplus, we can perform many database administration, query, user management and so on.

Steps to Install SQLplus on Windows 10

Step 1. Install Oracle Instant Client

Before we can install and run the sqlplus utility, we need to configure the Oracle Instant Client Utility first. So, I would suggest you to read this article to Install Oracle Instant Client 19.5 on Windows 10.

Step 2. Download SQLplus software package

Once you’ve setup the instant client correctly, now we need to download the sqlplus package from the following link

https://download.oracle.com/otn_software/nt/instantclient/19500/instantclient-sqlplus-windows.x64-19.5.0.0.0dbru.zip

So this is the sqlplus software package for Windows 10 64 bit edition.

Step 3. Install the Package

From the previous step, you should have a zip file called : instantclient-sqlplus-windows.zip. Now extract the file to your instant client directory you created on the Step 1. Here is the screenshot of my instant client folder looks like:

Notice that there is sqlplus application in this instant client folder. Now we are ready to go.

How to Connect to Oracle Database via SQLplus Command

In the following example, I will show you how to connect to remote oracle database via sqlplus command. Before we connect, we need to configure the user in the Oracle database. Skip the user creating step if you already have a database user that can connect to the pluggable database.

Create a new user

In the database server host, we need to connect to the database using sqlplus in order to create a new user for the pluggable database. In this case, my container database called cdb1 and the pluggable database is called pdb1.

How to Install Oracle Database 19c on CentOS 8

Login as oracle user and then execute this command.

sqlplus / as sysdba

Now let’s show the current database we connected

SQL> show con_name;
 CON_NAME
 CDB$ROOT

As you can see now we are connected to the root database. We need to switch to the pluggable database (pdb1).

SQL> alter session set container = pdb1;
 Session altered.

Now check again using show command

SQL> show con_name;
 CON_NAME
 PDB1

As you can see, now we are connected to PDB1, the pluggable database. Next, we need to open the database so we can create a new user for it.

SQL> ALTER DATABASE OPEN;
Database altered. 

Then, we can create a new user

SQL> CREATE USER manjaro IDENTIFIED BY thePassword;
 User created.

The command will create a new user called “manjaro” and password “thePassword”. After that, we need to grant “CONNECT” privileges to manjaro user so user can connect to the database. You can also add multiple roles to the new users. For example:

SQL> GRANT CONNECT, DBA, RESOURCE TO manjaro;
 Grant succeeded.

Done. Please note that this new user only exist in the pluggable database. So, to connect, we need to specify the username as manjaro@pdb1 in the Connect command.

Connect to the Database

Ok, so now we have a new user setup in the pdb1 database. Let’s try to connect to the database.

From the other computer (in this case Windows 10 where sqlplus is installed using above steps), open command prompt and execute the following command:

   sqlplus manjaro@192.168.100.50/pdb1.griyaku.lan 

Output:

C:Usersdhani>sqlplus manjaro@192.168.100.50/pdb1.griyaku.lan                                                                                                                                                                                  SQL*Plus: Release 19.0.0.0.0 - Production on Thu Jan 9 07:06:56 2020                                                    Version 19.5.0.0.0                                                                                                                                                                                                                              Copyright (c) 1982, 2019, Oracle.  All rights reserved.                                                                                                                                                                                         Enter password:                                                                                                                                                                                                                                 Connected to:                                                                                                           Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production                                                  Version 19.3.0.0.0    

Where:

• 192.168.100.50 is the Oracle database host IP address
• pdb1.griyaku.lan is the Oracle database service

You can check your Oracle database services and instances with the following command. Make sure you execute this command on the database host as oracle user.

lsnrctl services;

Output:

[oracle@centos ~]$ lsnrctl services;
 LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 08-JAN-2020 19:08:07
 Copyright (c) 1991, 2019, Oracle.  All rights reserved.
 Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
 Services Summary…
 Service "86b637b62fdf7a65e053f706e80a27ca.griyaku.lan" has 1 instance(s).
   Instance "cdb1", status READY, has 1 handler(s) for this service…
     Handler(s):
       "DEDICATED" established:10 refused:0 state:ready
          LOCAL SERVER
 Service "9b7a3d83ac5545ffe0533264a8c09ccc.griyaku.lan" has 1 instance(s).
   Instance "cdb1", status READY, has 1 handler(s) for this service…
     Handler(s):
       "DEDICATED" established:10 refused:0 state:ready
          LOCAL SERVER
 Service "cdb1.griyaku.lan" has 1 instance(s).
   Instance "cdb1", status READY, has 1 handler(s) for this service…
     Handler(s):
       "DEDICATED" established:10 refused:0 state:ready
          LOCAL SERVER
 Service "cdb1XDB.griyaku.lan" has 1 instance(s).
   Instance "cdb1", status READY, has 1 handler(s) for this service…
     Handler(s):
       "D000" established:127 refused:0 current:0 max:1022 state:ready
          DISPATCHER 
          (ADDRESS=(PROTOCOL=tcp)(HOST=centos.griyaku.lan)(PORT=34745))
 Service "pdb1.griyaku.lan" has 1 instance(s).
   Instance "cdb1", status READY, has 1 handler(s) for this service…
     Handler(s):
       "DEDICATED" established:10 refused:0 state:ready
          LOCAL SERVER
 The command completed successfully

Thank you for reading this how to install sqlplus 19.5 on Windows 10. I hope you enjoy it and leave us comments for any queries. Cheers.

Install and Configure SQL*Plus Instant Client on Windows

GUI tools like TOAD and SQL Developer are all fine, but those who have cut their teeth on SQL*Plus will not do without good old command-line interface. And so, a message like the one below makes one want to set things right immediately…

Here’s a step-by-step guide for doing away with this error, by installing SQL*Plus Instant Client on Windows.

First things first: What is SQL*Plus Instant Client?

SQL*Plus Instant Client is a standalone product with all the functionality of SQL*Plus command-line. It connects to existing remote Oracle databases, but does not include its own database. It is easy to install and uses significantly less disk space than the full Oracle Database Client installation required to use SQL*Plus command-line.

If all you want is a simple command-line interface to connect to remote Oracle databases, Instant Client meets your purpose well.

On to the installation…

1. Download the installers from OTN: Basic OCI + SQL*Plus

SQL*Plus Instant Client package needs OCI Instant Client as a pre-requisite. For things to work, the two must be (i) of the same version, and (ii) installed in the same directory.

Go to OTN’s Instant Client Downloads for MS Windows.

Accept the license agreement.

Choose the packages you want to install – in this case:

Versions used: SQL*Plus 12.2.0.1.0, for a Windows 64-bit environment.

Click on the hyperlinks to start download – this will download the ZIP files to your local machine.

Extract both the ZIPs to the same local folder, say D:Toolssqlplus. A new subfolder (instantclient_12_2 in this case) will get created.

3. Edit the PATH variable to include the SQL*Plus Instant Client directory

Add the directory containing the Instant Client files to the PATH environment variable. Make sure this addition does not have a conflict with another existing Oracle path – if it does, either remove the existing value or move the new value to the front of the PATH variable.

We now have the SQL*Plus Instant Client ready to connect to remote databases.

4. Connect to a Database with SQL*Plus Instant Client via Oracle Net connection identifier

To connect to a database, first open a command prompt window.

Enter the Easy Connection identifier to connect to the database. For example, the Easy Connection identifier for the HR schema in an XE database, running on host sales-server, port 1521 is:

Once entered, SQL*Plus Instant Client will establish the database connection and you will see the SQL prompt.

You can now run your SQL commands through SQL*Plus Instant Client’s easy command-line interface.

Other than Easy Connection identifiers, Net Service Names can be used for making database connections via Instant Client. Net Service Names may come from sources such as LDAP or a tnsnames.ora file. For more details on connection options, see the user’s guide and reference.

Notes:

Remember that the error in the first screenshot (‘sqlplus’ is not recognized as an internal or external command) could be because of a misconfigured PATH – see step 3. Before you proceed to install SQL*Plus, verify that SQL*Plus is actually absent!

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Установка Oracle Database 18c Express Edition на Windows

В посте описывается установка системы управления базами данных (СУБД) Oracle Database 18c Express Edition (XE) на операционную систему (ОС) Windows. В примере рассматривается Windows 10, но процесс актуален для всех версий ОС Windows начиная с Windows 7 (подробнее – ниже).

Рассмотрены следующие шаги:

1. Подготовка к установке

Проверяется, соответствует ли используемая операционная система минимальным требованиям для установки и работы Oracle Database 18c XE. Допустимы следующие версии ОС Windows:

Для установки требуется минимум 2 Гб оперативной памяти, минимум 8,5 Гб дискового пространства для СУБД Oracle, 2 Гб дискового пространства для хранения временных файлов, и обладание правами администратора.

Если системные требования соответствуют, то скачивается установочный файл. Oracle Database Express Edition (XE) распространяется бесплатно и установочный файл можно скачать с официального сайта Oracle – https://www.oracle.com/database/technologies/xe-downloads.html

Для скачивания на портале Oracle необходимо наличие учетной записи с паролем. При ее отсутствии осуществляется регистрация новой учетной записи.

Пройдя по ссылке, выбирается версия Oracle Database 18c XE для вашей операционной системы : Oracle Database 18c Express Edition for Windows x64. Запускается скачивание zip архива (OracleXE184_Win64.zip). Время скачивания может быть достаточно большим. Объем архива 1,9 Гб.

2. Установка СУБД

Распаковывается скачанный архив. Среди извлеченных файлов ищется и запускается файл, под названием setup.exe. Запустится окно установщика. Нажимаем Next.

Дается согласие с лицензионным соглашением (I accept the terms in the license agreement). Нажимаем Next.

Выбирается каталог, в который будет установлена СУБД Oracle Database 18с XE. Можно оставить каталог по умолчанию, или же выбрать собственный (для этого примера выбирается каталог E:dbXE18c ). Нажимаем Next.

Далее указываются пароли для учетных записей SYS, SYSTEM и PDBADMIN, которые понадобятся для подключения к базе данных (БД) в дальнейшем.

На следующем шаге проверяется (и корректируется опцией Back в случае необходимости) правильность введенной ранее информации и нажимается Install. Это запускает процесс установки СУБД.

Во время установки система запрашивает разрешение на доступ к сетям от Java платформы. Доступ предоставляется установкой галочек в соответствующие чекбоксы и нажатием «Разрешить доступ». При отказе в доступе некоторые функции Oracle Database 18c XE не будут доступны.

Завершение установки зафиксирует в соответствующем окне необходимую информацию для подключения к установленной базе данных.

3. Подключение к СУБД

После установки необходимо произвести подключение к БД, что позволит проверить работоспособность Oracle Database 18c XE. Подключиться можно с помощью SQL Developer и с помощью командной строки – SQLPlus.

Запускается SQL Developer и нажимается зеленый + в левом верхнем углу

Вводятся необходимые данные для подключения.

Все данные указывались во время установки базы данных. Если подключение осуществляется под пользователем SYS необходимо забудьте в графе роль выбрать SYSDBA.

Нажимается кнопка «Connect». Если все указано правильно, то SQL Developer открывает окно, которое позволяет выполнять SQL запросы к выбранной базе данных.

Для подключения с помощью командной строки – SQLPlus запускается командная строка и набирается команда sqlplus / as sysdba, которая подключает к БД под пользователем SYS.

На этом установка и базовые настройки Oracle Database 18c Express Edition на ОС Windows завершены.

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Sqlplus установка на windows 10

SQL*Plus Instant Client is a standalone product with all the functionality of SQL*Plus command-line. It connects to existing remote Oracle databases, but does not include its own database. It is easy to install and uses significantly less disk space than the full Oracle Database Client installation required to use SQL*Plus command-line.

SQL*Plus Instant Client is available on platforms that support the OCI Instant Client. See About OCI Instant Client for more information on the OCI Instant Client.

To install SQL*Plus Instant Client, you need two packages:

SQL*Plus Instant Client package.

Either the Basic OCI Instant Client package, or the lightweight OCI Instant Client package.

D.1 About Choosing the SQL*Plus Instant Client to Install

SQL*Plus Instant Client can be installed in two ways:

Download the packages from the Oracle Technology Network (OTN).

Copy the same files that are in the packages from an Oracle Database 12 c Client Administrator installation.

Both the SQL*Plus and OCI packages must be from the same Oracle Database version, for example, 12.2.0.0.0.

D.1.1 Basic Instant Client

SQL*Plus Instant Client using the Basic OCI package works with any NLS_LANG setting supported by the Oracle Database. It supports all character sets and language settings available in the Oracle Database.

D.1.2 Lightweight Instant Client

SQL*Plus Instant Client using the lightweight OCI package displays error messages in English only and supports only specific character sets. It is significantly smaller than SQL*Plus Instant Client using the Basic OCI package.

Valid values for NLS_LANG parameters with the lightweight Instant Client are:

language can be any valid language supported by the Oracle Database, however, error messages are only reported in English.

territory can be any valid territory supported by the Oracle Database.

charset is one of the following character sets:

D.1.2.1 Lightweight SQL*Plus Instant Client Error with Unsupported Character Set

Attempting to start SQL*Plus Instant Client with an unsupported character set will fail with the following error:

D.2 About Installing SQL*Plus Instant Client by Downloading from OTN

The OTN downloads for Linux are RPM packages. The OTN downloads for UNIX and Windows are zip files.

The SQL*Plus Instant Client package should never be installed on an ORACLE_HOME.

D.2.1 Installing SQL*Plus Instant Client from Linux RPM Packages

D.2.2 Installing SQL*Plus Instant Client from the UNIX or Windows Zip Files

D.2.3 List of Files Required for SQL*Plus Instant Client

Tables E-1, E-2 and E-3 list the required files from each of the SQL*Plus and OCI packages. The files from only one of the OCI packages are required. Other files installed that are not listed here can be ignored, or can be removed to save disk space.

Table D-1 Instant Client Files in the SQL*Plus Package

SQL*Plus data shared library

Table D-2 Instant Client Files in the Basic OCI Package

Linux and UNIX	Windows	Description

Client code library

OCI Instant Client data shared Library

OCI Instant Client data shared library

Table D-3 Instant Client Files in the Lightweight OCI Package

Linux and UNIX	Windows	Description

Client code library

OCI Instant Client data shared library (English only)

D.3 Installing SQL*Plus Instant Client from the 12 c Client Release Media

D.3.1 Installing SQL*Plus Instant Client on UNIX or Linux

To install SQL*Plus Instant Client using the Basic OCI package on UNIX and Linux, copy the following files:

To install SQL*Plus Instant Client using the lightweight OCI package on UNIX and Linux, copy the following files:

D.3.2 Installing SQL*Plus Instant Client on Windows

To install SQL*Plus Instant Client using the Basic OCI package on Windows, copy the following files:

To install SQL*Plus Instant Client using the lightweight OCI package on Windows, copy the following files:

D.4 About Configuring SQL*Plus Instant Client

The SQL*Plus Instant Client executable should only be used with the matching version of the OCI Instant Client.

Note that no ORACLE_HOME or ORACLE_SID environment variables need to be set.

D.4.1 Configuring SQL*Plus Instant Client on Linux (from RPMs)

The RPMs downloaded from OTN install into Oracle specific sub-directories in the /usr file system. The sub-directory structure enables multiple versions of Instant Client to be available.

For example, to set LD_LIBRARY_PATH on Solaris in the Bourne or Korn shells:

For example, to set PATH in the bash shell:

D.4.2 Configuring SQL*Plus Instant Client on Linux (from Client Media or Zip File) and UNIX

For example on Solaris in the Bourne or Korn shells:

D.4.3 Configuring SQL*Plus Instant Client on Windows

The environment may be configured using SET commands in a Windows command prompt or made permanent by setting Environment Variables in System Properties.

For example, to set environment variables in Windows 2000 using System Properties, open System from the Control Panel, click the Advanced tab and then click Environment Variables.

For example, add c:instantclient12_2 to the beginning of PATH.

If you have installed the lightweight Instant Client, see Lightweight Instant Client for information about supported NLS_LANG settings.

D.5 About Connecting to a Database with SQL*Plus Instant Client

SQL*Plus Instant Client is always ‘remote’ from any database server. To connect to a database you must specify the database using an Oracle Net connection identifier.

An example using an Easy Connection identifier to connect to the HR schema in the MYDB database running on mymachine is:

Alternatively you can use a Net Service Name:

If you want to use Net Service Names configured in a local Oracle Net tnsnames.ora file, then set the environment variable TNS_ADMIN to the directory containing the tnsnames.ora file. For example, on UNIX, if your tnsnames.ora file is in /home/user1 and it defines the Net Service Name MYDB2:

The TWO_TASK (on UNIX) or LOCAL (on Windows) environment variable can be set to a connection identifier. This removes the need to explicitly enter the connection identifier whenever a connection is made in SQL*Plus or SQL*Plus Instant Client. This UNIX example connects to the database known as MYDB4:

On Windows, TNS_ADMIN and LOCAL may be set in the System Properties. See Configuring SQL*Plus Instant Client on Windows.

D.6 AS SYSDBA or AS SYSOPER Connections with SQL*Plus Instant Client

To connect AS SYSDBA or AS SYSOPER to perform DBA tasks, you need to set up an Oracle password file on the database server using the database’s orapwd utility. Once this is configured, your SQL*Plus Instant Client connection string might look something like:

See Using Password File Authenticationfor information on Oracle password files.

D.7 About Uninstalling Instant Client

The SQL*Plus Instant Client package can be removed separately from the OCI Instant Client. After uninstalling the SQL*Plus Instant Client package, the remaining OCI Instant Client libraries enable custom written OCI programs or third party database utilities to connect to a database.

D.7.1 Uninstalling SQL*Plus Instant Client

For installations on UNIX and Windows, and installations on Linux from the Client Release media, manually remove the following SQL*Plus specific files:

Table D-4 Instant Client Files in the SQL*Plus Package

Источник

E SQL*Plus Instant Client

SQL*Plus Instant Client is a standalone product with all the functionality of SQL*Plus command-line. It connects to existing remote Oracle databases, but does not include its own database. It is easy to install and uses significantly less disk space than the full Oracle Database Client installation required to use SQL*Plus command-line.

SQL*Plus Instant Client is available on platforms that support the OCI Instant Client. See the Oracle Call Interface Programmer’s Guide for more information on the OCI Instant Client.

To install SQL*Plus Instant Client, you need two packages:

SQL*Plus Instant Client package.

Either the Basic OCI Instant Client package, or the lightweight OCI Instant Client package.

Choosing the SQL*Plus Instant Client to Install

SQL*Plus Instant Client can be installed in two ways:

Download the packages from the Oracle Technology Network (OTN).

Copy the same files that are in the packages from an Oracle Database 10 g Client Administrator installation.

Both the SQL*Plus and OCI packages must be from the same Oracle Database version, for example, 10.2.0.1.

Basic Instant Client

SQL*Plus Instant Client using the Basic OCI package works with any NLS_LANG setting supported by the Oracle Database. It supports all character sets and language settings available in the Oracle Database.

Lightweight Instant Client

SQL*Plus Instant Client using the lightweight OCI package displays error messages in English only and supports only specific character sets. It is significantly smaller than SQL*Plus Instant Client using the Basic OCI package.

Valid values for NLS_LANG parameters with the lightweight Instant Client are:

language must always be American.

territory can be any valid territory supported by the Oracle Database.

charset is one of the following character sets:

Lightweight SQL*Plus Instant Client Error with Unsupported Character Set

Attempting to start SQL*Plus Instant Client with an unsupported character set will fail with the following error:

Installing SQL*Plus Instant Client by Downloading from OTN

The OTN downloads for Linux are RPM packages. The OTN downloads for UNIX and Windows are zip files.

The SQL*Plus Instant Client package should never be installed on an ORACLE_HOME.

Installing SQL*Plus Instant Client from Linux RPM Packages

Installing SQL*Plus Instant Client from the UNIX or Windows Zip Files

Create a new directory, for example, /home/instantclient10_2 on UNIX or c:instantclient10_2 on Windows.

Unzip the two packages into the new directory.

List of Files Required for SQL*Plus Instant Client

Tables E-1, E-2 and E-3 list the required files from each of the SQL*Plus and OCI packages. The files from only one of the OCI packages are required. Other files installed that are not listed here can be ignored, or can be removed to save disk space.

Table E-1 Instant Client Files in the SQL*Plus Package

Linux and UNIX	Windows	Description

SQL*Plus data shared library

SQL*Plus site profile

Table E-2 Instant Client Files in the Basic OCI Package

Linux and UNIX	Windows	Description

Client code library

OCI Instant Client data shared library

Table E-3 Instant Client Files in the Lightweight OCI Package

Linux and UNIX	Windows	Description

Client code library

OCI Instant Client data shared library (English only)

Installing SQL*Plus Instant Client from the 10 g Client Release Media

Run the installer on the Oracle Database 10 g Client Release media and choose the Administrator option.

Create a new directory, for example, /home/instantclient10_2 on UNIX and Linux, or c:instantclient10_2 on Windows.

Copy the SQL*Plus Instant Client and the OCI Instant Client files to the new directory. All files must be copied from the same ORACLE_HOME.

Installing SQL*Plus Instant Client on UNIX or Linux

To install SQL*Plus Instant Client using the Basic OCI package on UNIX and Linux, copy the following files:

To install SQL*Plus Instant Client using the lightweight OCI package on UNIX and Linux, copy the following files:

Installing SQL*Plus Instant Client on Windows

To install SQL*Plus Instant Client using the Basic OCI package on Windows, copy the following files:

To install SQL*Plus Instant Client using the lightweight OCI package on Windows, copy the following files:

Configuring SQL*Plus Instant Client

The SQL*Plus Instant Client executable should only be used with the matching version of the OCI Instant Client.

Note that no ORACLE_HOME or ORACLE_SID environment variables need to be set.

Configuring SQL*Plus Instant Client on Linux (from RPMs)

The RPMs downloaded from OTN install into Oracle specific sub-directories in the /usr file system. The sub-directory structure enables multiple versions of Instant Client to be available.

Add the name of the directory containing the Instant Client libraries to LD_LIBRARY_PATH. Remove any other Oracle directories.

For example, to set LD_LIBRARY_PATH on Solaris in the Bourne or Korn shells:

For example, to set PATH in the bash shell:

Set Oracle globalization variables required for your locale. A default locale will be assumed if no variables are set. See the Oracle Database Globalization Support Guide for more information.

Configuring SQL*Plus Instant Client on Linux (from Client Media or Zip File) and UNIX

Add the name of the directory containing the Instant Client files to the appropriate shared library path LD_LIBRARY_PATH, LIBPATH or SHLIB_PATH. Remove any other Oracle directories.

For example on Solaris in the Bourne or Korn shells:

Add the directory containing the Instant Client files to the PATH environment variable. If it is not set, then an absolute or relative path must be used to start SQL*Plus. Remove any other Oracle directories from PATH. For example:

Set SQLPATH to the directory containing the Instant Client files so glogin.sql can be found. For example:

Set Oracle globalization variables required for your locale. A default locale will be assumed if no variables are set. See the Oracle Database Globalization Support Guide for more information.

Configuring SQL*Plus Instant Client on Windows

The environment may be configured using SET commands in a Windows command prompt or made permanent by setting Environment Variables in System Properties.

For example, to set environment variables in Windows 2000 using System Properties, open System from the Control Panel, click the Advanced tab and then click Environment Variables.

Add the directory containing the Instant Client files to the PATH system environment variable. Remove any other Oracle directories from PATH.

For example, add c:instantclient10_2 to the beginning of PATH.

Set the user environment variable SQLPATH to the directory containing the Instant Client files so glogin.sql is found.

Set Oracle globalization variables required for your locale. A default locale will be assumed if no variables are set. See the Oracle Database Globalization Support Guide for more information. For example, to set NLS_LANG for a Japanese environment, create a user environment variable NLS_LANG set to JAPANESE_JAPAN.JA16EUC.

If you have installed the lightweight Instant Client, see Lightweight Instant Client for information about supported NLS_LANG settings.

Connecting to a Database with SQL*Plus Instant Client

SQL*Plus Instant Client is always ‘remote’ from any database server. To connect to a database you must specify the database using an Oracle Net connection identifier.

An example using an Easy Connection identifier to connect to the HR schema in the MYDB database running on mymachine is:

Alternatively you can use a Net Service Name:

If you want to use Net Service Names configured in a local Oracle Net tnsnames.ora file, then set the environment variable TNS_ADMIN to the directory containing the tnsnames.ora file. For example, on UNIX, if your tnsnames.ora file is in /home/user1 and it defines the Net Service Name MYDB2:

The TWO_TASK (on UNIX) or LOCAL (on Windows) environment variable can be set to a connection identifier. This removes the need to explicitly enter the connection identifier whenever a connection is made in SQL*Plus or SQL*Plus Instant Client. This UNIX example connects to the database known as MYDB4:

On Windows, TNS_ADMIN and LOCAL may be set in the System Properties. See Configuring SQL*Plus Instant Client on Windows.

AS SYSDBA or AS SYSOPER Connections with SQL*Plus Instant Client

To connect AS SYSDBA or AS SYSOPER to perform DBA tasks, you need to set up an Oracle password file on the database server using the database’s orapwd utility. Once this is configured, your SQL*Plus Instant Client connection string might look something like:

See the Oracle Database Administrator’s Guide for information on Oracle password files.

Uninstalling Instant Client

The SQL*Plus Instant Client package can be removed separately from the OCI Instant Client. After uninstalling the SQL*Plus Instant Client package, the remaining OCI Instant Client libraries enable custom written OCI programs or third party database utilities to connect to a database.

Uninstalling SQL*Plus Instant Client

For installations on UNIX and Windows, and installations on Linux from the Client Release media, manually remove the following SQL*Plus specific files:

Table E-4 Instant Client Files in the SQL*Plus Package

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Linux and UNIX	Windows	Description