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64 bit AIX - increase SHMMAX??
I have a 5G SGA that gets split up into 3 shared segments of 2G,2G and 1G.
I assume it's happening because SHMMAX is set to a max of 2G at the kernel level. How do I up this to unlimited on AIX?
Thanks.
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Hi
shmmax Purpose: Specifies maximum shared memory segment size.
Values: Dynamic with maximum value of 256 MB for 32-bit processes and 0x80000000u for 64-bit
Tuning: Does not require tuning because it is dynamically adjusted as needed by the kernel.
regards
Hrishy
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Originally Posted by hrishy
Values: Dynamic with maximum value of 256 MB for 32-bit processes and 0x80000000u for 64-bit
Tuning: Does not require tuning because it is dynamically adjusted as needed by the kernel.
Thanks. So you're saying 3 shared segments of 2G,2G,1G is normal behavior (with a 5G SGA)?! And I needn't bother accomodating the SGA in a single shared memory segment?
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Hi
With AIX yes.
raise a TAR with metalink also and you can confirm this.
regards
Hrishy
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AIX does not have SHMMAX parameter.
Tamil
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