Wait events provide insight into why a session is waiting and the resources it is waiting for. Some common wait events include:
- db file sequential read
- db file scattered read
- latch: cache buffers chains
- log file sync
- library cache: load into buffer
The impact of wait events can vary depending on the type of wait event and the duration of the wait. Some wait events, such as db file sequential read, can be caused by normal database operations. Other wait events, such as latch: cache buffers chains, can indicate a problem with the database configuration or hardware.
