How do you spool a file in Unix?

What is spool command in Unix?

Answer: The SPOOL command causes SQL*Plus to write the results to a file on the operating system. SQL> spool /tmp/myfile.lst. Once spool is set, SQL*Plus will continue to spool the output until the command SPOOL OFF. Note that the file cannot be seen or used until the SPOOL OFF command.

How do you use the spool command?

In order to execute the Spool in Oracle, you’ll need to run it as a script (for example, if you are using Oracle SQL Developer, you may press F5 to run the Spool as a script). Your CSV file will then get created at your specified path.

How do you spool SQL output in Unix?

file using UNIX. Image removed by sender.
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1. In SQL prompt first run the sql command whose o/p u want 2 spool;
2. Then write spool <drivename:><filename.txt>
3. Then at sql prompt type / (it will run the previous SQl query in buffer);
4. Once the output ends, then at sql prompt say (sql > spool off);

What is a spool file?

A spooled file holds output data until it can be printed. … The spooled file collects data from a device until a program or device is able to process the data. A program uses a spooled file as if it were reading from or writing to an actual device.

How do I run a SQL query in Unix?

Do the following steps to start SQL*Plus and connect to the default database:

1. Open a UNIX terminal.
2. At the command-line prompt, enter the SQL*Plus command in the form: $> sqlplus.
3. When prompted, enter your Oracle9i username and password. …
4. SQL*Plus starts and connects to the default database.

How do you run a shell script in SQL?

To run a SQL script using SQL*Plus, place the SQL along with any SQL*Plus commands in a file and save it on your operating system. For example, save the following script in a file called “C:emp. sql”. CONNECT scott/tiger SPOOL C:emp.

Can we use spool in procedure?

6 Answers. spool is a sqlplus command. it cannot be used in pl/sql.

What is set Serveroutput on?

Basically the use of SET SERVEROUTPUT is to display the query answer in SQL *PLUS interface… When you use the DBMS_OUTPUT. PUT_LINE procedure, the procedure will write the passing string into the Oracle buffer. … Use the “Set serveroutput on” to display the buffer used by dbms_output.

Where are Oracle spools stored?

2 Answers. Spool is a client activity, not a server one; the . lst file will be created on the machine that SQL Developer is on, not the server where the database it’s connecting to resides. You can spool to a specific directory, e.g. spool c:windowstemptest.

How do I write SQL output to a file?

Let’s look at each of the ways we can export the results of a query.

1. Show results to a file in SSMS. In the first option, we will configure SSMS to display the query results to a txt file. …
2. SQLCMD. SQLCMD is the SQL Server Command Line utility. …
3. PowerShell. …
4. Import/Export Wizard in SSMS. …
5. SSIS in SSDT. …
6. C# …
7. Reporting Services. …
8. BCP.

26 окт. 2016 г.

How do I run an Oracle script in putty?

To run the SQL script, follow these steps:

1. Open the command prompt by pressing the key Window+R and then type CMD in the Run window and press enter.
2. In the Windows command prompt, change the directory where your SQL script exists, for example, CD F:mysqlscripts and press enter.

4 окт. 2018 г.

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

Running a Script as You Start SQL*Plus

1. 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.
2. Include your username as the first line of the file. Follow the SQLPLUS command with @ and the filename.

What is difference between spooling and buffering?

Spooling overlaps the input and output of one job with the computation of another job. Buffering on other hand overlaps the input and output of one job with the computation of the same job. … Spooling is more efficient than buffering.

Why is spooling used?

Spooling is useful because devices access data at different rates. The spool buffer provides a waiting station where data can rest while a slower device, such as a printer, catches up. When the slower device is ready to handle a new job, it can read another batch of information from the spool buffer.

What is spooling explain with example?

In computing, spooling is a specialized form of multi-programming for the purpose of copying data between different devices. In contemporary systems, it is usually used for mediating between a computer application and a slow peripheral, such as a printer.