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import java.sql.*;

class JdbcTest {
public static void main (String args []) throws SQLException
{
DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());

Connection conn = DriverManager.getConnection
("jdbc:oracle:thin:@10.1.2.101:1521:csv2dev", "omartine", "guate");

Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery("select * from emp");
while (rset.next())
System.out.println (rset.getString(1)); // Print col 1
stmt.close();
}
}

con =
DriverManager.getConnection(
"jdbc:oracle:thin:@(DESCRIPTION = " +
"(ADDRESS_LIST = (ADDRESS = " +
"(PROTOCOL = TCP)(HOST = 10.1.2.101)(PORT = 1521)))" +
"(CONNECT_DATA = (SERVICE_NAME = csv2dev.world)))","omartine","omartine");

--------------------------
Compile Program
--------------------------
javac ConnectionExample.java

--------------------------
Run Program
--------------------------
java ConnectionExample

--------------------------
Program Output
--------------------------

+-------------------------------+
| USING Class.forName() |
+-------------------------------+

Loading JDBC Driver -> oracle.jdbc.driver.OracleDriver
Connecting to -> jdbc:oracle:thin:@jeffreyh3:1521:CUSTDB
Connected as -> scott
Creating Statement...
Opening ResultsSet...
Results...
User -> SCOTT
Sysdate -> 28-MAY-2003 21:40:00
Closing ResultSet...
Closing Statement...
Closing down all connections...

+-------------------------------+
| USING jdbc.drivers PROPERTY |
+-------------------------------+

Loading JDBC Driver -> oracle.jdbc.driver.OracleDriver
Connecting to -> jdbc:oracle:thin:@jeffreyh3:1521:CUSTDB
Connected as -> scott
Creating Statement...
Opening ResultsSet...
Results...
User -> SCOTT
Sysdate -> 28-MAY-2003 21:40:05
Closing ResultSet...
Closing Statement...
Closing down all connections...

+-------------------------------+
| USING DriverManager CLASS |
+-------------------------------+

Loading JDBC Driver -> oracle.jdbc.driver.OracleDriver
Connecting to -> jdbc:oracle:thin:@jeffreyh3:1521:CUSTDB
Connected as -> scott
Creating Statement...
Opening ResultsSet...
Results...
User -> SCOTT
Sysdate -> 28-MAY-2003 21:40:10
Closing ResultSet...
Closing Statement...
Closing down all connections...

+-------------------------------+
| USING OCI Driver |
+-------------------------------+

Loading JDBC Driver -> oracle.jdbc.driver.OracleDriver
Connecting to -> jdbc:oracle:oci8:@CUSTDB_JEFFREYH3
Connected as -> scott
Creating Statement...
Opening ResultsSet...
Results...
User -> SCOTT
Sysdate -> 28-MAY-2003 21:40:16
Closing ResultSet...
Closing Statement...
Closing down all connections...

Class.forName("oracle.jdbc.driver.OracleDriver");
// or you can use:
// DriverManager.registerDriver(
// new oracle.jdbc.driver.OracleDriver());

Connection conn =
DriverManager.getConnection(
"jdbc:oracle:thin:@(DESCRIPTION = " +
"(ADDRESS_LIST = (ADDRESS = " +
"(PROTOCOL = TCP)(HOST = 10.1.2.101)(PORT = 1521)))" +
"(CONNECT_DATA = (SERVICE_NAME = csv2dev.world)))","omartine","omartine");

Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery(
"select 'Hello Thin driver tester '||USER||'!' result from dual");
while(rset.next())
System.out.println(rset.getString(1));

Connect internal
connect /as sysdba
SQLPLUS /as sysdba
SYSTEM/MANAGER

important statements:

select table_name, owner from all_tables;

alter user user_name identified by new_password;

SQL Connection Strings

Perl $dbh = DBI->connect("DBI:mysql:demo2_agbook1:localhost","demo2_agbook1","");
PHP $dbh=mysql_connect ("localhost", "demo2_agbook1", "") or die ('I cannot connect to the database.'); mysql_select_db ("demo2_agbook1");
JDBC Connection connection = null; Class.forName("org.gjt.mm.mysql.Driver").newInstance(); connection = DriverManager.getConnection( "jdbc:mysql://localhost/demo2_agbook1?user=demo2_agbook1&password=");


mysql connectivity

database oscar

table clients; fields Name and City

<?php

$DBName = "oscar";


$DBUser = "neztimar";
$DBPass = "doalfred";
$DBHost = "localhost";

$link = mysql_connect ( $DBHost, $DBUser, $DBPass )
or die ( "Could notconnect<br><br>" );

print ( "Connected to mysql server successfully<br><br>" );

mysql_select_db ( $DBName )
or die ( "Could not select database<br><br>" );

print ( "Connected to database successfully<br><br>" );
$query = mysql_query("SELECT Name, City FROM Clients");
while(list($Name,$City)=mysql_fetch_row($query)){
print "<p>Name: $Name $City</p>"; }
mysql_free_result($query);

mysql_close ( $link );

?>

 

 

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