Topic
  • 2 replies
  • Latest Post - ‏2013-03-27T13:52:51Z by DorukAksoy
SystemAdmin
SystemAdmin
6902 Posts

Pinned topic nmon shows no Real free memory, can this be the cause for a reboot?

‏2013-03-27T11:16:07Z |
I have a 2 nodes Oracle RAC cluster (Oracle Version 11.2.0.3) with nodes let's call them host1 and host2 (2 different LPARs) - OS is AIX 6.1.7.5 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 is the nmon Report from the rebootet LPAR. (Format Excel 2007).

Thanks in advance for some hints/advice.
Luise
Updated on 2013-03-27T13:52:51Z at 2013-03-27T13:52:51Z by DorukAksoy
  • SystemAdmin
    SystemAdmin
    6902 Posts

    Re: nmon shows no Real free memory, can this be the cause for a reboot?

    ‏2013-03-27T12:39:51Z  
    As it is more a nmon question I've opened a thread in Performance Tools Forum
    https://www.ibm.com/developerworks/forums/forum.jspa?forumID=749
  • DorukAksoy
    DorukAksoy
    7 Posts

    Re: nmon shows no Real free memory, can this be the cause for a reboot?

    ‏2013-03-27T13:52:51Z  
    Hi,

    Did your host2 makes paging space?
    Did you check errpt?
    I'm not an Oracle Expert but it seems main problem is host2's memory and i think Oracle RAC communication of 2 node won't use all your host2 free memory...