Month: June 2021

Typically, you manually start an instance, and then mount and open the database, making it available for users. You can use the SQL*Plus STARTUP command, Oracle Enterprise Manager (Enterprise Manager), or the SRVCTL utility to perform these steps. To start a database instance using Oracle Net, the following must be true: The listener creates a … Read more

The most crucial structure for recovery is the online redo log, which consists of two or more preallocated files that store changes to the database as they occur. The online redo log records changes to the data files. Use of the Online Redo Log The database maintains online redo log files to protect against data … Read more