7.7.1.7.21 pmemcachemin Attribute

Purpose

The pmemcachemin attribute specifies a minimum guaranteed space allocation in the persistent memory (PMEM) cache.

Note:

This attribute applies to Oracle Exadata System Software releases before 23.1.0. Otherwise, see xrmemcachemin Attribute.

Syntax

 ALTER IORMPLAN 
   dbplan=(( name=db_name, ... pmemcachemin=number ... ) ... )

Usage Notes

• You specify the value for pmemcachemin in bytes. You can also use the suffixes M (megabytes), G (gigabytes), or T (terabytes) to specify larger values. For example, 300M, 150G, or 1T.

• The value for pmemcachemin must be at least 4 MB.

• In any plan, the sum of all pmemcachemin values cannot exceed the size of the PMEM cache.

• If pmemcachelimit is specified, then the value for pmemcachemin cannot exceed pmemcachelimit.

• If pmemcachesize is specified, then the value for pmemcachemin cannot exceed pmemcachesize.