Database Memory & 4030/4031 (MOSC)

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difference in physical memory registered by OS and Oracle

edited Jan 13, 2023 12:10PM in Database Memory & 4030/4031 (MOSC) 14 commentsAnswered

Oracle reports that we only have 512GB of physically memory


from alertlog:


WARNING: pga_aggregate_limit value is too high for the

amount of physical memory on the system

PGA_AGGREGATE_LIMIT is 102400 MB

PGA_AGGREGATE_TARGET is 46080 MB.

physical memory size is 522240 MB

limit based on physical memory and SGA usage is 512 MB

SGA_MAX_SIZE is 626688 MB


but OS Zone (Solaris SPARC) is capped to 814GB


zonecfg -z prod-db02 info

capped-memory:

physical: 814G


/etc/project is set to 1024GB of project.max-shm-memory

user.oracle:100::oracle::process.max-file-descriptor=(basic,8092,deny),(priv,65536,deny);project.max-shm-memory=(priv,1099511627776,deny)

user.grid:101::grid::process.max-file-descriptor=(basic,8092,deny),(priv,65536,deny);project.max-shm-memory=(priv,824633720832,deny)

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