Oracle is dirty after the cache block write into what kind of cache-CodePudding

As title, DBWn process will be dirty after the cache to disk, dirty cache is become free cache or hit the cache?

CodePudding user response:

Hit the cache!

CodePudding user response:

reference 1/f, faint blue water fountain response:

hit cache!

Then the hit cache moved to the MRU end of the LRU list

CodePudding user response:

refer to the second floor Montenegro whitewater response:

Quote: refer to 1st floor springs of water faint reply:
hit cache!

Then the hit cache moved to the MRU end of the LRU list?

To drop, oracle will get from the data on the disk to buffer, then from the buffer to the MRU end of the LRU List,

CodePudding user response:

Only heard of cache hit ratio, hit the cache is what the devil

CodePudding user response:

reference 3 floor springs of water faint reply:

Quote: refer to the second floor Montenegro whitewater response:

Quote: refer to 1st floor springs of water faint reply:
hit cache!

Then the hit cache moved to the MRU end of the LRU list?

To drop, oracle will turn from the data on the disk to buffer, then from the buffer to the MRU end of the LRU List

This time won't read the disk, not already made in the cache

CodePudding user response:

refer to fifth floor Montenegro whitewater response:

Quote: refer to the third floor springs of water faint reply:

Quote: refer to the second floor Montenegro whitewater response:

Quote: refer to 1st floor springs of water faint reply:
hit cache!

Then the hit cache moved to the MRU end of the LRU list?

To drop, oracle will turn from the data on the disk to buffer, then from the buffer to the MRU end of the LRU List

This time won't read disk again, have been hit in the cache, isn't it

Uh huh,