read(8,"\0\25\0\0\6\0\0\0\0\0\3\5\"\21\0\0\0\17\0\0\0", 2064) = 21
gettimeofday({1404438819,369259}, NULL) = 0
gettimeofday({1404438819,369906}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805701
gettimeofday({1404438819,370962}, NULL) = 0
gettimeofday({1404438819,371394}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
gettimeofday({1404438819,372304}, NULL) = 0
gettimeofday({1404438819,372741}, NULL) = 0
gettimeofday({1404438819,373117}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805701
gettimeofday({1404438819,375003}, NULL) = 0
gettimeofday({1404438819,375561}, NULL) = 0
gettimeofday({1404438819,376567}, NULL) = 0
write(11,"\0\204\0\0\6\0\0\0\0\0\4\1\0\0\0\37\0\1\1\0\0\0{\5\0\0\0\0\21\0\0\0"...,132) = 132
read(8,"\0\34\0\0\6\0\0\0\0\0\21i#L,\351\t\1\0\0\0\21\0\0\0\3\223$", 2064) =28
gettimeofday({1404438819,378886}, NULL) = 0
gettimeofday({1404438819,379120}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805702
gettimeofday({1404438819,380076}, NULL) = 0
gettimeofday({1404438819,380433}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805702
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805702
gettimeofday({1404438819,384734}, NULL) = 0
gettimeofday({1404438819,385145}, NULL) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
getrusage(RUSAGE_SELF,{ru_utime={0, 442932}, ru_stime={0, 424935}, ...}) = 0
times(NULL) = 429805703
gettimeofday({1404438819,386442}, NULL) = 0
gettimeofday({1404438819,386802}, NULL) = 0
gettimeofday({1404438819,387042}, NULL) = 0
write(11,"\0\21\0\0\6\0\0\0\0\0\t\1\0\0\0!\0", 17) = 17
read(8,
*缺少hosts解析时，UTL_INADDR.get_host_address查询现象
[root@org54~]# vi /etc/hosts --将客户端FPA4GFVZXULBFCR解析地址注释掉
# Do notremove the following line, or various programs
# that requirenetwork functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.56.11rac11
192.168.56.22rac22
192.168.56.31rac11-vip
192.168.56.32rac22-vip
192.168.2.11rac11-priv
192.168.2.22rac22-priv
192.168.56.7node1
192.168.56.8gc1
192.168.56.5 org54
#192.168.56.117FPA4GFVZXULBFCR
~
~
"/etc/hosts"19L, 417C written
客户端登陆
主机端：
SQL>col MACHINE for a50
SQL>select username,machine,program,sql_id from v$session where username is notnull
--查询到登陆主机
USERNAME MACHINE PROGRAM SQL_ID
------------------------------------------------------------- -------------
SYS org54 sqlplus@org54 (TNS V1-V3)
SCOTT WORKGROUP\FPA4GFVZXULBFCR sqlplus.exe
SYS org54 sqlplus@org54 (TNS V1-V3) 8w8k8ss45hm25
SQL>select UTL_INADDR.get_host_address('FPA4GFVZXULBFCR') from dual; --在没有hosts解析的情况下，报错了
selectUTL_INADDR.get_host_address('FPA4GFVZXULBFCR') from dual
*
ERROR at line1:
ORA-29257:host FPA4GFVZXULBFCR unknown
ORA-06512: at"SYS.UTL_INADDR",