oracle中如何获取本机ip地址，根据IP地址获取域名？
-----解析ip 地址SQL> select utl_inaddr.get_host_address('google.com') from dual;
UTL_INADDR.GET_HOST_ADDRESS('GOOGLE.COM')
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122.229.30.202
-----获取本机IP地址
SQL> select utl_inaddr.get_host_address from dual;
GET_HOST_ADDRESS
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10.80.18.241
-----根据IP地址反向解析主机名
SQL> select utl_inaddr.get_host_name('10.80.18.241') from dual;
UTL_INADDR.GET_HOST_NAME('10.80.18.241')
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lixora
SQL> select utl_inaddr.get_host_name('10.80.18.243') from dual;
UTL_INADDR.GET_HOST_NAME('10.80.18.243')
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oracle11g-dagi
SQL> select utl_inaddr.get_host_name('8.8.8.8') from dual;
UTL_INADDR.GET_HOST_NAME('8.8.8.8')
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google-public-dns-a.google.com
SQL> select utl_inaddr.get_host_name('10.80.18.210') from dual;
select utl_inaddr.get_host_name('10.80.18.210') from dual
*
ERROR at line 1:
ORA-29257: host 10.80.18.210 unknown
ORA-06512: at "SYS.UTL_INADDR", line 4
ORA-06512: at "SYS.UTL_INADDR", line 35
ORA-06512: at line 1
SQL> select utl_inaddr.get_host_name('10.80.19.210') from dual;
select utl_inaddr.get_host_name('10.80.19.210') from dual
*
ERROR at line 1:
ORA-29257: host 10.80.19.210 unknown
ORA-06512: at "SYS.UTL_INADDR", line 4
ORA-06512: at "SYS.UTL_INADDR", line 35
ORA-06512: at line 1
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