2026-03-12 20:23:15

2026-03-12 21:23:47 +01:00
parent eab4b36eca
commit 93039b8489
3332 changed files with 699614 additions and 0 deletions
--- a/tpt/demos/Client_id.java
+++ b/tpt/demos/Client_id.java
@@ -0,0 +1,47 @@
+// run with:
+// java -cp $ORACLE_HOME/jdbc/lib/ojdbc5.jar:. Client_id
+//
+// Note that Oracle 12c JDBC drivers support JDBC 4.1 with SetClientInfo() method
+// In Oracle 12c+ drivers, conn.setEndToEndMetrics() is deprecated in favor of
+// conn.setClientInfo()
+//
+// https://docs.oracle.com/en/database/oracle/oracle-database/19/jjdbc/JDBC-standards-support.html#GUID-1987FAC4-E93A-49A5-9EB4-A78B465E6938
+
+import java.sql.*;
+import oracle.jdbc.OracleConnection;
+
+public class Client_id {
+
+    public static void main(String[] args) throws InterruptedException {
+
+        try {
+            // get connection and statement
+            DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
+            Connection conn = DriverManager.getConnection( "jdbc:oracle:thin:@localhost:1521:LIN11G", "system","oracle");
+            Statement stmt = conn.createStatement();
+            
+            // set metrics for connection (will be sent to server the next rountrip)
+            String[] metrics = new String[OracleConnection.END_TO_END_STATE_INDEX_MAX];
+            metrics[OracleConnection.END_TO_END_CLIENTID_INDEX]="Tanel Poder:123";
+            ((OracleConnection)conn).setEndToEndMetrics(metrics,(short)0);
+            
+            // run your SQL code. the client identifier attribute is bundled with this roundtrip and automatically sent to server with this request
+            ResultSet rs = stmt.executeQuery("SELECT sid, username, client_identifier FROM v$session WHERE type='USER' AND status='ACTIVE'");
+
+            // print output from v$session. here you should see this java program's session with client identifier set            
+            System.out.printf("\n%4s %20s %30s\n", new Object[] {"SID", "USERNAME", "CLIENT_IDENTIFIER"});
+            System.out.println("--------------------------------------------------------");
+            while (rs.next()) {
+                System.out.printf("%4s %20s %30s\n", new Object[] {Integer.toString(rs.getInt("sid")), rs.getString("username"), rs.getString("client_identifier")} );
+            }
+
+            // Sleeping for 10 seconds. If you query the client_identifier from another session
+            // you'll see that the last client_identifier still remains set (is not automatically cleared
+            // upon statement completion)
+            Thread.sleep(10000);
+        }
+            catch (SQLException e) {
+          e.printStackTrace();
+        }         
+    }
+}