search for: lower_zone_protect

...ng 32 bit) server (2.6.9-42.0.3.ELsmp), I was getting: page allocation failure. order:0, mode:0x50 (snip lines and lines of debug output) This was accompanied by a huge swapout storm that brought the system to a near standstill. Also, it could trigger OOM-Killer activity. Setting /proc/sys/vm/lower_zone_protection to 150 seems to prevent the problem. (It's not been long enough that I'm *certain* that it's fixed but it seems to be.) The upstream bug report is here: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149088 Hope this helps someone someday, because I had a heck of a time find...

Dear all, I am getting below syslog error on my oracle database server running on RHEL4U5. During this time my swap shows zero on both available and free in the top command output , result in total system hang. can any one guide me how to fix this issue of memory and exactly what this error indicates?? ERROR FROM SYSLOG