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.
Printable View
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.
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
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?Quote:
Originally Posted by hrishy
Hi
With AIX yes.
raise a TAR with metalink also and you can confirm this.
regards
Hrishy
AIX does not have SHMMAX parameter.
Tamil