I have a 2 nodes Oracle RAC cluster (Oracle Version 188.8.131.52) with nodes let's call them host1 and host2 (2 different LPARs) - OS is AIX 184.108.40.206 64 bit.
On 25th march 2013 about 1:37 o'clock the node host1 sent a reboot to node 2 (host2) because host1 could not reach host2 via rac interconnect (network is ok and was available).
Now I'v made a nmon analysis and host2 shows that there is no more real free memory on host2 before reboot on 1:37 o'clock. Can this be a cause that host1 cannot reach host2?
Attached the screenshot of Real free memory.
Thanks in advance for some hints/advice.
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1 reply Latest Post - 2013-04-05T19:54:11Z by nagger
Pinned topic nmon shows no Real free memory, can this be the cause for a reboot?
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Updated on 2013-04-05T19:54:11Z at 2013-04-05T19:54:11Z by nagger
nagger 100000MRSJ1594 PostsACCEPTED ANSWER
Re: nmon shows no Real free memory, can this be the cause for a reboot?2013-04-05T19:54:11Z in response to SystemAdminHI,
I am not sure what the units are on the graph.
But AIX usually runs with low memory and the lrud process paging pages out to keep the freelist non-zero.
You could tune that but it is unlikely zero memory would stop your network - the kernel will have lots of buffering space already.
I have no information of the criteria Oracles uses to shoot its partner.
It's there an Oracle log?