What is Noarchivelog mode in Oracle?

Posted on by Dominique Stacey

What is Noarchivelog mode in Oracle?

NOARCHIVELOG mode is basically the absence of ARCHIVELOG mode and has the disadvantage of not being able to recover to any point in time. NOARCHIVELOG mode does have the advantage of not having to write transactions to an archive log and thus increases the performance of the database slightly.

How do I know if my database is in Noarchivelog?

Checking ARCHIVELOG mode status

  1. Log in as OS user oracle and enter the following commands: $ export ORACLE_SID= where is the name of the database $ sqlplus /nolog SQL> connect / as sysdba.
  2. To check the ARCHIVELOG mode status, enter the following SQL command: SQL> archive log list;

How do I put my database in Archivelog mode?

Enabling ARCHIVELOG mode

  1. Log in as user oracle and enter the following commands: $ export ORACLE_SID=
  2. To enable ARCHIVELOG mode status, enter the following SQL commands: SQL> Shutdown SQL> Startup mount SQL> Alter database archivelog; SQL> alter database open;

How can I tell if Oracle database is open?

How to run an Oracle 12c database instance

  1. On Windows systems, go to Control Panel→Administrative Tools→Services to see whether the Oracle service has started. You can also look under Windows Task Manager to find similar information.
  2. On Linux/UNIX systems, simply check for the PMON process.

What is Noarchivelog mode in SQL?

How do I check my DB status?

To check general database status, I recommend:

  1. Check if database processes are running. For example, from a Unix shell, running: $ ps -ef | grep pmon.
  2. Check if listeners are running using $ ps -ef | grep tns and $ lsnrctl status LISTENER.

What is V instance Oracle?

V$INSTANCE displays the state of the current instance. Column. Datatype.

What is the use of Archivelog in Oracle?

What Is the Archived Redo Log? Oracle Database lets you save filled groups of redo log files to one or more offline destinations, known collectively as the archived redo log, or more simply the archive log. The process of turning redo log files into archived redo log files is called archiving.