SID SESI:
SELECT sys_context('USERENV', 'SID') FROM DUAL;
ORACLE_SID:
SELECT sys_context('userenv','instance_name') FROM dual;
HOST (Mesin database) :
SELECT UTL_INADDR.get_host_name FROM dual;
Sandi:Lihat http://www.dba-Oracle.com/t_password_storage.htm
Port SISI KLIEN:
Select port from v$session;
SERVER OS PID dari proses server Oracle terhubung ke proses klien
SELECT p.spid
FROM v$process p, v$session s
WHERE s.paddr = p.addr and
sys_context('USERENV', 'SID') = s.sid;
Port sisi server:
Ini sangat sulit karena port proses server dipetakan ke port yang berbeda dari port awal - misalnya port 12102 di listener.ora/tnsnames.ora dipetakan oleh pendengar ke port yang bebas sewenang-wenang (omong-omong:itulah alasan mengapa sering firewall perlu dimatikan dan sementara koneksi tidak dapat diperoleh setelah pemetaan melalui firewall. Ini dapat diperbaiki tetapi ini adalah cerita lain)
Kode di bawah ini
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memberikan hak istimewa yang diperlukan
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mendefinisikan fungsi tersimpan java "Util.RunThis" yang mengeksekusi di server database perintah OS yang diteruskan ke fungsi dan mengembalikan string.
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"Util.RunThis" dipetakan ke fungsi PL/SQL "RUN_CMD"
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"GET_PORT" adalah fungsi PL/SQL yang mengembalikan nilai numerik dari Port yang digunakan dari proses server database yang terhubung ke sesi klien. Di dalam GET_PORT SELECT digunakan untuk menentukan pid proses server database menggantikan [SPID] pada perintah di bawah ini
/usr/sbin/lsof -Pan -p [SPID] -i -
akhirnya memanggil pilihan sederhana, kami mendapatkan proses Port server database yang dilampirkan ke sesi saat ini
connect / as sysdba grant select on sys.v_$process to scott; grant select on sys.v_$session to scott; begin dbms_java.grant_permission ('SCOTT', 'SYS:java.io.FilePermission', '<<ALL FILES>>', 'execute'); end; / connect scott/[email protected] create or replace and compile java source named "Util" as import java.io.*; import java.lang.*; import java.nio.charset.Charset; import java.nio.*; public class Util extends Object { public static String RunThis(String args) { Runtime rt = Runtime.getRuntime(); String rc = args; try { Process p = rt.exec(args); int bufSize = 4096; BufferedInputStream bis = new BufferedInputStream(p.getInputStream(), bufSize); int len; byte buffer[] = new byte[bufSize]; // Echo back what the program spit out while ((len = bis.read(buffer, 0, bufSize)) != -1) { String xxx = new String(buffer, Charset.forName("UTF-8")); rc = rc + xxx; } p.waitFor(); rc = rc + "ABC"; } catch (Exception e) { e.printStackTrace(); rc = "Exception!!!" ; } finally { return rc; } } } / create or replace function RUN_CMD( p_cmd in varchar2) return VARCHAR2 as language java name 'Util.RunThis(java.lang.String) return java.lang.String'; / create or replace function GET_PORT return number as SPID NUMBER; retval varchar2(32000); y varchar2(1024); cmd VARCHAR2(256); begin SELECT p.spid INTO SPID FROM sys.v_$process p, sys.v_$session s WHERE s.paddr = p.addr and sys_context('USERENV', 'SID') = s.sid; cmd := '/usr/sbin/lsof -Pan -p [SPID] -i'; /* raw string data returned from Shell executing cmd */ retval := run_cmd(replace(cmd,'[SPID]', SPID)); /* get last occurance of : marking redirected port */ y := substr(retval,INSTR(retval,':', -1)+1,1024); /* return the numeric port by stripping info like " (ESTABLISHED)" */ return to_number(substr(y,1,INSTR(y, ' ')-1)); end; / show errors select get_port from dual; /*-------------------- OUTPUT -------------------------- */ SQL> connect / as sysdba grant select on sys.v_$process to scott; grant select on sys.v_$session to scott; begin dbms_java.grant_permission ('SCOTT', 'SYS:java.io.FilePermission', '<<ALL FILES>>', 'execute'); end; /Connected. SQL> SQL> Grant succeeded. SQL> SQL> Grant succeeded. SQL> SQL> 2 3 4 5 6 7 8 PL/SQL procedure successfully completed. SQL> connect scott/[email protected] Connected. SQL> create or replace and compile java source named "Util" 2 as import java.io.*; import java.lang.*; import java.nio.charset.Charset; 3 4 5 6 import java.nio.*; 7 public class Util extends Object 8 { 9 public static String RunThis(String args) { Runtime rt = Runtime.getRuntime(); 10 11 12 String rc = args; 13 14 try 15 { 16 17 Process p = rt.exec(args); 18 19 int bufSize = 4096; 20 BufferedInputStream bis = 21 new BufferedInputStream(p.getInputStream(), bufSize); 22 int len; byte buffer[] = new byte[bufSize]; 23 24 // Echo back what the program spit out while ((len = bis.read(buffer, 0, bufSize)) != -1) 25 26 27 { 28 String xxx = new String(buffer, Charset.forName("UTF-8")); 29 rc = rc + xxx; 30 } p.waitFor(); 31 32 rc = rc + "ABC"; 33 34 35 } 36 catch (Exception e) 37 { 38 e.printStackTrace(); 39 rc = "Exception!!!" ; 40 } 41 42 finally 43 { 44 return rc; 45 } } 46 47 } / 48 Java created. SQL> create or replace function RUN_CMD( p_cmd in varchar2) return VARCHAR2 as language java name 'Util.RunThis(java.lang.String) return java.lang.String'; / 2 3 4 Function created. SQL> create or replace function GET_PORT return number as SPID NUMBER; retval varchar2(32000); 2 3 4 5 y varchar2(1024); cmd VARCHAR2(256); begin 6 7 8 SELECT p.spid INTO 9 10 11 SPID FROM sys.v_$process p, sys.v_$session s WHERE 12 13 14 15 16 s.paddr = p.addr and sys_context('USERENV', 'SID') = s.sid; cmd := '/usr/sbin/lsof -Pan -p [SPID] -i'; 17 18 19 20 21 /* raw string data returned from Shell executing cmd */ retval := run_cmd(replace(cmd,'[SPID]', SPID)); 22 23 24 /* get last occurance of : marking redirected port */ y := substr(retval,INSTR(retval,':', -1)+1,1024); /* return the numeric port by stripping info like " (ESTABLISHED)" */ 25 26 27 28 return to_number(substr(y,1,INSTR(y, ' ')-1)); end; / show errors 29 30 Function created. SQL> No errors. SQL> select get_port from dual; GET_PORT ---------- 36586
