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Don Burleson Blog 







db_flash_cache_file and db_flash_cache_size parameters tips

 Oracle Database Tips by Donald BurlesonJuly 25, 2015

Question:  How does the db_flash_cache_file and db_flash_cache_size parameters work?  What are the procedures for setting the db_flash_cache_file and db_flash_cache_size parameters?

 Answer: As of 2015, the The Smart Flash Cache feature is available on Solaris and Oracle Linux platforms.  Here are the meanings of the db_flash_cache parameters:

  • db_flash_cache_file:  The db_flash_cache_file is used to identify the flash disks to be used by the Smart Flash Cache.

    db_flash_cache_file = /u02/ssdvol1, /u02/ssdvol2
  • db_flash_cache_size: This specifies the size of the flash RAM (SSD) that are in the db_flash_cache_size. 

db_flash_cache_size = 1G, 1G

Dr Hall notes that due to a bug, this parameter needs to be placed in the pfile, and.or spfile for the database.

Also see my Oracle flash_cache tips

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