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硬件：64G内存 4颗12核AMD CPU ，系统为32位 red hat 5.5 企业版（应用程序暂时在64位上不稳定，所以选择32位）使用PAE内核，支持大内存，安装oracle 11g，目前系统运行3-4天后，就出现死机的情况：服务器上层应用全部死掉，只能ping通，接显示器，操作无反应，ssh都登录不上，不知道是什么原因？如何解决？初步怀疑是oracle 11g安装在使用内存的问题上引发了OOM机制保护，message日志如下：
Oct 21 04:25:16 SV01 kernel: Free pages: 50643284kB (50635956kB HighMem)
Oct 21 04:25:16 SV01 kernel: Active:3203392 inactive:390852 dirty:0 writeback:0 unstable:0 free:12660821 slab:58228 mapped-file:350026 mapped-anon:107641 pagetables:15082
Oct 21 04:25:16 SV01 kernel: DMA free:3588kB min:68kB low:84kB high:100kB active:12kB inactive:0kB present:16384kB pages_scanned:63733 all_unreclaimable? yes
Oct 21 04:25:16 SV01 kernel: lowmem_reserve[]: 0 0 880 65520
Oct 21 04:25:16 SV01 kernel: DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
Oct 21 04:25:16 SV01 kernel: lowmem_reserve[]: 0 0 880 65520
Oct 21 04:25:16 SV01 kernel: Normal free:3740kB min:3756kB low:4692kB high:5632kB active:1016kB inactive:16kB present:901120kB pages_scanned:1010314 all_unreclaimable? yes
Oct 21 04:25:16 SV01 kernel: lowmem_reserve[]: 0 0 0 517120
Oct 21 04:25:16 SV01 kernel: HighMem free:50635956kB min:512kB low:69552kB high:138592kB active:12812540kB inactive:1563392kB present:66191360kB pages_scanned:0 all_unreclaimable? no
Oct 21 04:25:16 SV01 kernel: lowmem_reserve[]: 0 0 0 0
Oct 21 04:25:16 SV01 kernel: DMA: 1*4kB 18*8kB 9*16kB 1*32kB 1*64kB 1*128kB 0*256kB 0*512kB 1*1024kB 1*2048kB 0*4096kB = 3588kB
Oct 21 04:25:16 SV01 kernel: DMA32: empty
Oct 21 04:25:16 SV01 kernel: Normal: 35*4kB 0*8kB 33*16kB 24*32kB 4*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 3740kB
Oct 21 04:25:16 SV01 kernel: HighMem: 2221*4kB 1268*8kB 220*16kB 67*32kB 45*64kB 44*128kB 65*256kB 7*512kB 5*1024kB 8*2048kB 12344*4096kB = 50635956kB
Oct 21 04:25:16 SV01 kernel: 3486605 pagecache pages
Oct 21 04:25:16 SV01 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0
Oct 21 04:25:16 SV01 kernel: Free swap = 32764556kB
Oct 21 04:25:16 SV01 kernel: Total swap = 32764556kB
Oct 21 04:25:16 SV01 kernel: Free swap: 32764556kB
Oct 21 04:25:16 SV01 kernel: 16777216 pages of RAM
Oct 21 04:25:16 SV01 kernel: 16547840 pages of HIGHMEM
Oct 21 04:25:16 SV01 kernel: 436203 reserved pages
Oct 21 04:25:16 SV01 kernel: 5265788 pages shared
Oct 21 04:25:16 SV01 kernel: 0 pages swap cached
Oct 21 04:25:16 SV01 kernel: 2 pages dirty
Oct 21 04:25:16 SV01 kernel: 0 pages writeback
Oct 21 04:25:16 SV01 kernel: 350026 pages mapped
Oct 21 04:25:16 SV01 kernel: 58228 pages slab
Oct 21 04:25:16 SV01 kernel: 15082 pages pagetables
Oct 21 04:25:16 SV01 kernel: Out of memory: Killed process 32592, UID 503, (oracle).
Oct 21 04:25:20 SV01 kernel: gawk invoked oom-killer: gfp_mask=0xd0, order=0, oomkilladj=0
Oct 21 04:25:20 SV01 kernel: [<c0459ccb>] out_of_memory+0x72/0x1a3
Oct 21 04:25:20 SV01 kernel: [<c045b232>] __alloc_pages+0x24e/0x2cf
Oct 21 04:25:20 SV01 kernel: [<c0470f86>] cache_alloc_refill+0x26d/0x482
Oct 21 04:25:20 SV01 kernel: [<c0470d0f>] kmem_cache_alloc+0x41/0x4b
Oct 21 04:25:20 SV01 kernel: [<c041caeb>] pgd_alloc+0x29/0x77
Oct 21 04:25:20 SV01 kernel: [<c042378a>] mm_init+0xa9/0xe1
Oct 21 04:25:20 SV01 kernel: [<c042431a>] copy_process+0x9f5/0x123e
Oct 21 04:25:20 SV01 kernel: [<c043436e>] alloc_pid+0x1c0/0x216
Oct 21 04:25:20 SV01 kernel: [<c0424db1>] do_fork+0x41/0x168
Oct 21 04:25:20 SV01 kernel: [<c040318b>] sys_clone+0x28/0x2d
Oct 21 04:25:20 SV01 kernel: [<c0404f17>] syscall_call+0x7/0xb
Oct 21 04:25:20 SV01 kernel: =======================
Oct 21 04:25:20 SV01 kernel: Mem-info:
Oct 21 04:25:20 SV01 kernel: DMA per-cpu:
Oct 21 04:25:20 SV01 kernel: cpu 0 hot: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 0 cold: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 1 hot: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 1 cold: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 2 hot: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 2 cold: high 0, batch 1 used:0
Oct 21 04:25:20 SV01 kernel: cpu 3 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 3 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 4 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 4 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 5 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 5 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 6 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 6 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 7 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 7 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 8 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 8 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 9 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 9 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 10 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 10 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 11 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 11 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 12 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 12 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 13 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 13 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 14 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 14 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 15 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 15 cold: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 16 hot: high 0, batch 1 used:0
Oct 21 04:25:26 SV01 kernel: cpu 16 cold: high 0, batch 1 used:0 |
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发表于 2012-10-26 20:54
