Log File Sync Wait Event

Log File Sync Wait Event – Afterwards, i have also checked the situation of 'log file sync' and 'log file parallel write' from 14:00 to 14:34 during that time period with view. If the average log file sync wait. What causes high waits for 'log file sync'? Long wait on log file sync wait event with message 'log file sync switching to polling' and 'warning:

Log write elapsed time' (doc id 2372105.1) last. If your archiver is not keeping up. High levels of waits for the 'log file sync' wait events are seen. From the stats pack reports, it is always in the top 5 timed events.

Typically, the log file sync wait event on the primary database is the first place administrators look when they want to assess the impact of enabling synchronous redo transport (sync). Resources classes log file synch waits hi tom.i have a question regarding log file sync waits. Event waits times average wait (ms) % database time wait class;

Histogram data for lfs and other related waits ( from lfsdiag.sql output ) approach: What is a ‘log file sync’ wait? Don’t truss lgwr or any background process unless it is absolutely.

Tune lgwr to get good throughput to disk. What should be collected for initial diagnosis of ‘log file sync’ waits ? The ‘log file sync’ wait event is seen when a foreground process is waiting to be posted by lgwr to.

Wakeup lgwr if idle 2. Top 10 foreground events by total wait time. Look at the wait distribution for log file sync waits by looking at.

Log file sync and and LGWR redo wait for copy wait events Oracle