Oracle Auto-Startup Script for Linux

This post is to provide a script to auto-start Oracle Instances on Linux upon server restart. First step would be to configure /etc/oratab file as per your requirement, oratab file is in the following format: <DB NAME>:<ORACLE HOME>:<Y|N> The last letter tells oracle if the database need to restarted or not, so we would change…

row cache lock – Oracle Wait Event

The Row Cache or Data Dictionary Cache is a memory area in the shared pool that holds data dictionary information to reduce physical I/O on the data dictionary tables. The row cache lock is used primarily to serialize changes to the data dictionary and is waited on when a lock on a data dictionary cache…

log file sync – Oracle Wait Event

When a user session commits, the session’s redo information needs to be flushed from memory to the redo logfile to make it permanent. At the time of commit, the user session will post the LGWR to write the log buffer (containing the current unwritten redo, including this session’s redo information) to the redo log file.…