What is host string in SQL Plus Oracle 10g?

A host string is the name you assign for TNS connectivity in tnsnames. ora. These entries typically identify the machine and port number and SID ( or service name) of the database you are trying to connect to. If the client and database are on same machine, you don’t need a host string.

How do I connect to Oracle database using SQL Plus?

To connect to Oracle Database from SQL*Plus:

  1. If you are on a Windows system, display a Windows command prompt.
  2. At the command prompt, type sqlplus and press the key Enter. SQL*Plus starts and prompts you for your user name.
  3. Type your user name and press the key Enter.
  4. Type your password and press the key Enter.

How use sqlplus to connect to an Oracle database located on another host without modifying your own Tnsnames Ora?

How to connect sqlplus without tnsnames. ora

  1. 1) EZCONNECT. EZCONNECT is Oracle’s easy connect naming method.
  2. Syntax of EZCONNECT: sqlplus username/password@[//]host[:port][/service_name]
  3. Example:
  4. Example:
  5. 2) TNS Connect String.
  6. Syntax of TNS Connect String.
  7. Example.
  8. Related Posts.

How do I log into Oracle 10g SQL Plus?

To start SQL*Plus and connect to the default database

  1. Open a UNIX or a Windows terminal and enter the SQL*Plus command: sqlplus.
  2. When prompted, enter your Oracle Database username and password.
  3. Alternatively, enter the SQL*Plus command in the form: sqlplus username/password.

How do I find my Oracle hostname and port number?

Locate Oracle Listener Port

  1. You find out the Oracle listener port number from listener.ora file. In Windows, the file is located in below directory,
  2. Open the listener. ora file and you will get the port number (1521).
  3. Alternatively, you can use the command LSNRCTL.

What is SQL Plus and SQL Developer?

SQL*PLUS is a command line tool, SQL Developer is a GUI interface to your DB. You can call SQL*PLUS from command line and easily execute scripts so it’s simple to automate tasks. SQL Developer will display db content in a nice layout, allows you to edit data etc.

What are SQL Plus commands?

SQL*Plus commands allow a user to manipulate and submit SQL statements. Specifically, they enable a user to: Enter, edit, store, retrieve, and run SQL statements.

Does sqlplus use Tnsnames?

Answer. When you install the Full 10g ODBC driver, it installs an application called sqlplus on your PC. The sqlplus application can be very handy for testing ODBC connectivity. It requires that you have a good tnsnames.

Can I connect to Oracle without Tnsnames?

The easy way to connect to oracle without tnsnames. ora is using EZCONNECT or you can say Oracl’ easy connect naming method. We can connect to oracle database across TCP/IP network. We can connect to oracle using connect descriptor or connection string you can say that as connect identifier.

How do I run a query in SQL Plus?

Starting SQL*Plus Command-line

  1. Open a UNIX or a Windows terminal and enter the SQL*Plus command: sqlplus.
  2. When prompted, enter your Oracle Database username and password.
  3. Alternatively, enter the SQL*Plus command in the form: sqlplus username.
  4. SQL*Plus starts and connects to the default database.

How do I fix protocol adapter error in SQL Plus?

How to Fix ORA-12560: TNS: Protocol Adapter Error

  1. Make sure the windows service is up and running.
  2. Make sure your ORACLE_SID is set to the instance name you’re trying to connect to. If either one or two are not correct you will get the error as seen below.