Question: How Do You Connect To A Database In UNIX Shell Script?

How do I connect to Oracle database?

Connecting to Oracle Database from SQL*PlusIf you are on a Windows system, display a Windows command prompt.At the command prompt, type sqlplus and press the key Enter.

SQL*Plus starts and prompts you for your user name.Type your user name and press the key Enter.

Type your password and press the key Enter..

How do you write EOF in terminal?

You can generally “trigger EOF” in a program running in a terminal with a CTRL + D keystroke right after the last input flush.

What is a spool?

(Entry 1 of 2) 1 : a cylindrical device which has a rim or ridge at each end and an axial hole for a pin or spindle and on which material (such as thread, wire, or tape) is wound. 2 : material or the amount of material wound on a spool. spool.

How do I run a Sqlplus script from the command line?

To run a script as you start SQL*Plus, use one of the following options:Follow the SQLPLUS command with your username, a slash, a space, @, and the name of the file: SQLPLUS HR @SALES. SQL*Plus starts, prompts for your password and runs the script.Include your username as the first line of the file.

What is a spool file?

Spooling is a system function that saves data in a spooled file for later processing or printing. … Spooled files can help you manage your data targeted for externally attached devices, such as a printer. A spooled file holds output data until it can be printed.

What is EOF character in Linux?

On Unix-like systems, there is no need for an EOF character; none is used. The system can tell applications how many bytes are in a file: … Unix systems in the shell conventionally use control-D to tell an application that an end of input (file) has been reached, but the control-D is not stored in the file.

What is EOF in shell script?

The question is ambiguous. In Unix, and Unix-like systems (including Linux and MacOS X) EOF (end-of-file) is a condition encountered by a read() operation on a file, terminal or file-like data stream (socket). It is not a character. Read Wikipedia: End-of-file for further details.

What does >> do in Linux?

3 Answers. The > sign is used for redirecting the output of a program to something other than stdout (standard output, which is the terminal by default). The >> appends to a file or creates the file if it doesn’t exist. The > overwrites the file if it exists or creates it if it doesn’t exist.

How do you connect to a database in Linux?

Connect To MySQL Database From Command LineLog in to your A2 Hosting account using SSH.At the command line, type the following command, replacing USERNAME with your username: mysql -u USERNAME -p.At the Enter Password prompt, type your password. … To display a list of databases, type the following command at the mysql> prompt:More items…

How do you connect to a database in Unix?

SQL*Plus Command-line Quick Start for UNIXOpen a UNIX terminal.At the command-line prompt, enter the SQL*Plus command in the form: $> sqlplus.When prompted, enter your Oracle9i username and password. … SQL*Plus starts and connects to the default database.

How do I run a SQL script in Unix?

Answer: To execute a script file in SQLPlus, type @ and then the file name. The above command assumes that the file is in the current directory. (ie: the current directory is usually the directory that you were located in before you launched SQLPlus.) This command would run a script file called script.

What does << EOF mean?

End-of-fileFrom Wikipedia, the free encyclopedia. In computing, end-of-file (EOF) is a condition in a computer operating system where no more data can be read from a data source. The data source is usually called a file or stream.

What is spool in shell script?

Using the Oracle spool command The “spool” command is used within SQL*Plus to direct the output of any query to a server-side flat file. SQL> spool /tmp/myfile.lst. Becuse the spool command interfaces with the OS layer, the spool command is commonly used within Oracle shell scripts.

What is Sqlplus command?

SQL*Plus is a command-line tool that provides access to the Oracle RDBMS. SQL*Plus enables you to: Enter SQL*Plus commands to configure the SQL*Plus environment. Startup and shutdown an Oracle database. Connect to an Oracle database.

How do I connect Unix shell script to database?

UNIX and Linux (Method 1) sql”. CONNECT scott/tiger SPOOL /u01/emp. lst SET LINESIZE 100 SET PAGESIZE 50 SELECT * FROM emp; SPOOL OFF EXIT; Next, create a shell script called “/u01/get_emp.