SPARC SuperCluster T4-4 Owner's Guide

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Updated: February 2016
 
 

Disable DISM

Dynamic Intimate Shared Memory (DISM) is not supported for use on SPARC SuperCluster Solaris environments in instances other than the ASM instance. For more information, see DISM Restrictions.


Note -  Do not disable the use of automatic shared memory management (ASMM) within the database, which is a very useful and desirable feature to reduce DBA management of the database.
  • Disable the use of DISM by the database on Solaris in one of two ways; either unsetting the SGA_MAX_SIZE / MEMORY_MAX_TARGET / MEMORY_TARGET parameters, or ensure SGA_MAX_SIZE is set to the same value as SGA_TARGET parameter or equal to the sum of all sga components in the instance.
    • For example, to set a 64 G SGA:
       
      alter system set SGA_TARGET=64G scope=spfile;
      alter system set SGA_MAX_SIZE=64G scope=spfile;
      alter system set MEMORY_MAX_TARGET=0 scope=spfile;
      alter system set MEMORY_TARGET=0 scope=spfile;