How to check if the ORACLE database is in archive log mode

An Oracle database can run in one of two modes. By default, the database is created in NOARCHIVELOG mode. This command will check to see if you have altered your database to run in ARCHIVELOG mode.

Set the environment variables if not added refer my last post to set the environment variables

Run the below command to know if you are running oracle database in ARCHIVELOG mode

[oracle@oracle.asvignesh.in ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.2.0.1.0 Production on Thu Feb 6 13:45:03 2020

Copyright (c) 1982, 2016, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     24
Next log sequence to archive   25
Current log sequence           25
SQL>

Or you can run the below line

SQL> select log_mode from v$database;

LOG_MODE
------------
ARCHIVELOG

Originally published at asvignesh.