這幾天在suse10下面配置oracle的enterprise manager的時候，master peer起不來，在rhel3下面一點問題都沒有
起來的時候出錯：
stat:/opt/oracle/product/9.2.0/network/snmp/peer # ./master_peer config.master nov
setup select/poll problem: bad file descriptor
./master_peer: error processing configuration
*** glibc detected *** ./master_peer: double free or corruption (fasttop): 0x0807d948 ***
*****== backtrace: *****====
/lib/libc.so.6[0xb7e40cb1]
/lib/libc.so.6(__libc_free+0x84)[0xb7e42314]
./master_peer[0x805cd09]
./master_peer[0x804e120]
./master_peer[0x804b275]
/lib/libc.so.6(__libc_start_main+0xdc)[0xb7df287c]
./master_peer(_io_getc+0x41)[0x8048dc1]
*****== memory map: *****===
08048000-08066000 r-xp 00000000
68:03
97956 /opt/oracle/product/9.2.0/network/snmp/peer/master_peer
08066000-08067000 rwxp 0001d000 68:03
97956 /opt/oracle/product/9.2.0/network/snmp/peer/master_peer
08067000-0809e000 rwxp 08067000
00:00
0 [heap]
b7b9c000-b7bd1000 r-xs 00000000
68:02
1183412 /var/run/nscd/dbvtklvz (deleted)
b7bd1000-b7bd9000 r-xp 00000000
68:02
738756 /lib/libnss_files-2.4.so
b7bd9000-b7bdb000 rwxp 00007000
68:02
738756 /lib/libnss_files-2.4.so
b7c00000-b7c21000 rwxp b7c00000 00:00
0b7c21000-b7d00000 ---p b7c21000 00:00
0b7dd1000-b7ddb000 r-xp 00000000
68:02
738781 /lib/libgcc_s.so.1
b7ddb000-b7ddc000 rwxp 00009000
68:02
738781 /lib/libgcc_s.so.1
b7ddc000-b7ddd000 rwxp b7ddc000 00:00
0b7ddd000-b7ef8000 r-xp 00000000
68:02
738739 /lib/libc-2.4.so
b7ef8000-b7efa000 r-xp 0011a000 68:02
738739 /lib/libc-2.4.so
b7efa000-b7efc000 rwxp 0011c000 68:02
738739 /lib/libc-2.4.so
b7efc000-b7eff000 rwxp b7efc000 00:00
0b7f0b000-b7f0c000 rwxp b7f0b000 00:00
0b7f0c000-b7f26000 r-xp 00000000
68:02
738732 /lib/ld-2.4.so
b7f26000-b7f28000 rwxp 0001a000 68:02
738732 /lib/ld-2.4.so
bff5e000-bff73000 rwxp bff5e000 00:00
0 [stack]
ffffe000-fffff000 ---p 00000000
00:00
0 [vdso]
aborted (core dumped)
stat:/opt/oracle/product/9.2.0/network/snmp/peer #
檢視core檔案
stat:/opt/oracle/product/9.2.0/network/snmp/peer # gdb master_peer core
gnu gdb 6.6
gdb is free software, covered by the gnu general public license, and you are
welcome to change it and/or distribute copies of it under certain conditions.
type "show copying" to see the conditions.
there is absolutely no warranty for gdb. type "show warranty"
for details.
this gdb was configured as "i586-suse-linux"...
using host libthread_db library "/lib/libthread_db.so.1".
warning: can't read pathname for load map: input/output error.
reading symbols from /lib/libc.so.6...done.
loaded symbols for /lib/libc.so.6
reading symbols from /lib/ld-linux.so.2...done.
loaded symbols for /lib/ld-linux.so.2
reading symbols from /lib/libnss_files.so.2...done.
loaded symbols for /lib/libnss_files.so.2
reading symbols from /lib/libgcc_s.so.1...done.
loaded symbols for /lib/libgcc_s.so.1
core was generated by `./master_peer config.master nov'.
program terminated with signal 6, aborted.
#00xffffe410 in __kernel_vsyscall ()
(gdb) where
#00xffffe410 in __kernel_vsyscall ()
#10xb7e058d0 in raise () from /lib/libc.so.6
#20xb7e06ff3 in abort () from /lib/libc.so.6
#30xb7e3b32b in __libc_message () from /lib/libc.so.6
#40xb7e40cb1 in malloc_printerr () from /lib/libc.so.6
#50xb7e42314 in free () from /lib/libc.so.6
#60x0805cd09 in mgmt_term_env ()
#70x0804e120 in agent_shutdown ()
#80x0804b275 in main ()
(gdb)
程序起來的時候怎麼呼叫了agent_shutdown 函式？
master_peer.out顯示錯誤：
setup select/poll problem: bad file descriptor
./master_peer: error processing configuration
在metalink下找到乙個文章，需要設定把ulimit -n 2048，嘗試設定成2048，還是不行，實在沒辦法，推出crt登陸，直接進root下，再嘗試啟動master_peer，居然起來了
觀察了一下，直接進root的時候ulimit -n的值是1024，而進oracle後再su到root的話，ulimit -n的值是65536，原來問題真的出在open files上面，metalink還是對的，只是suse10下面要設定1024才行，rhel3上面設定成8192都沒問題
是跟作業系統核心還是什麼有關？這個open files引數起什麼影響？
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