What is alert log file in Oracle The alert log file (also referred to as the ALERT.LOG) is a chronological log of messages and errors written out by an Oracle Database. Typical messages found in this file is: database startup, shutdown, log switches, space errors, etc. This file should constantly be monitored to detect unexpected messages and corruptions. Oracle will automatically create a new alert … Continue reading Alert log file in Oracle And command to check for ORA error and startup time »