Types of writes during flushing

To provide you with information about the specific condition that prompted buffer-flushing activity, the database server defines three types of writes and counts how often each write occurs.

The types of writes are as follows:
  • Foreground write
  • LRU write
  • Chunk write

To see the write counts that the database server maintains, run the onstat -F command.

If you implement mirroring for the database server, data is always written to the primary chunk first. The write is then repeated on the mirror chunk. Writes to a mirror chunk are included in the counts.

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