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Thread: Connecting Postgres using other network

Connecting Postgres using other network

From
Mohammad Tanvir Huda
Date:
Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
"Tom Haddon"
Date:
Just to check, you are using a non-standard port (6432 - the standard is 5432)?
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 12:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
"Taber, Mark"
Date:

Dumb question, but are you sure you want port 6432 instead of 5432?  Or was this a typo?

 

Cheers,

 

Mark Taber

State of California

Department of Finance

Infrastructure & Architecture Unit

916.323.3104 x2945

From: Mohammad Tanvir Huda [mailto:shayer009@yahoo.com]
Sent: Wednesday, August 11, 2004 12:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

 

Hello Everyone

 

I have installed Postgres server in a network and  i am trying to use the database using

Java code from other network.

 

I have set the tcp_ip=true in postgresql.conf file.

I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust

 

Then i start the server in port 6432.

 

After that i want to access the application using the following javacode.

 

import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;

public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.

  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";

    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }

    db.close();
  }

 public static void main (String args[])
   {

     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }

But this give me the following error


Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

Can anyone please tell me where is the error. what should i doo ..

 

regards

 

Shayer

 

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Re: Connecting Postgres using other network

From
Gustavo Franklin Nóbrega - PLANAE
Date:

Re: Connecting Postgres using other network

From
"Bender, Cheryl"
Date:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Yahoo! Mail - 50x more storage than other providers!

Re: Connecting Postgres using other network

From
Mohammad Tanvir Huda
Date:
Hello All
Thanks for your reply.
i want to use the port 6432 because some other instance of Postgresql is running on default port 5432,. And the psql command in this port works fine.
 
/scratch/huda/bin/psql -p 6432 test
 
If i want to allow any ip to get access to database what should i do.
is the following this legal
 
host template1 all 192.*.*.*  255.255.255.0 ident sameuser
 
Because when i hooked my PC to network it is assigned a dynamic IP .
 
thirdly, as mentioned in previous email where can i find the psql client tool.
 
Regards
 
Tanvir


"Bender, Cheryl" <cbender@mriresearch.org> wrote:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
Mohammad Tanvir Huda
Date:

Hello
 
i have made some entry in pg_hba.conf so that it can accept call from other computers.
 
But it still giving me the same error .
 
Can anyone pls tell me what is wrong with that
 
Regards
Mohammad
Mohammad Tanvir Huda <shayer009@yahoo.com> wrote:
Hello All
Thanks for your reply.
i want to use the port 6432 because some other instance of Postgresql is running on default port 5432,. And the psql command in this port works fine.
 
/scratch/huda/bin/psql -p 6432 test
 
If i want to allow any ip to get access to database what should i do.
is the following this legal
 
host template1 all 192.*.*.*  255.255.255.0 ident sameuser
 
Because when i hooked my PC to network it is assigned a dynamic IP .
 
thirdly, as mentioned in previous email where can i find the psql client tool.
 
Regards
 
Tanvir


"Bender, Cheryl" <cbender@mriresearch.org> wrote:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
"Andrew Janian"
Date:
Are you using -i option when you start Postgres?  If not, it will not allow remote requests even if you have the ACL set correctly.
 
Andrew
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org]On Behalf Of Mohammad Tanvir Huda
Sent: Thursday, August 12, 2004 10:00 AM
To: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Connecting Postgres using other network


Hello
 
i have made some entry in pg_hba.conf so that it can accept call from other computers.
 
But it still giving me the same error .
 
Can anyone pls tell me what is wrong with that
 
Regards
Mohammad
Mohammad Tanvir Huda <shayer009@yahoo.com> wrote:
Hello All
Thanks for your reply.
i want to use the port 6432 because some other instance of Postgresql is running on default port 5432,. And the psql command in this port works fine.
 
/scratch/huda/bin/psql -p 6432 test
 
If i want to allow any ip to get access to database what should i do.
is the following this legal
 
host template1 all 192.*.*.*  255.255.255.0 ident sameuser
 
Because when i hooked my PC to network it is assigned a dynamic IP .
 
thirdly, as mentioned in previous email where can i find the psql client tool.
 
Regards
 
Tanvir


"Bender, Cheryl" <cbender@mriresearch.org> wrote:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
Mohammad Tanvir Huda
Date:
I set the tcp_ip=true in postgresql.conf file. Isn't that the same thing while starting up postmaster with -i. Becasue i am starting up the server using pg_ctl .
 
Regards
 


Andrew Janian <ajanian@scottrade.com> wrote:
Are you using -i option when you start Postgres?  If not, it will not allow remote requests even if you have the ACL set correctly.
 
Andrew
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org]On Behalf Of Mohammad Tanvir Huda
Sent: Thursday, August 12, 2004 10:00 AM
To: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Connecting Postgres using other network


Hello
 
i have made some entry in pg_hba.conf so that it can accept call from other computers.
 
But it still giving me the same error .
 
Can anyone pls tell me what is wrong with that
 
Regards
Mohammad
Mohammad Tanvir Huda <shayer009@yahoo.com> wrote:
Hello All
Thanks for your reply.
i want to use the port 6432 because some other instance of Postgresql is running on default port 5432,. And the psql command in this port works fine.
 
/scratch/huda/bin/psql -p 6432 test
 
If i want to allow any ip to get access to database what should i do.
is the following this legal
 
host template1 all 192.*.*.*  255.255.255.0 ident sameuser
 
Because when i hooked my PC to network it is assigned a dynamic IP .
 
thirdly, as mentioned in previous email where can i find the psql client tool.
 
Regards
 
Tanvir


"Bender, Cheryl" <cbender@mriresearch.org> wrote:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

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Re: Connecting Postgres using other network

From
"Andrew Janian"
Date:
Should be the same.
 
Andrew
-----Original Message-----
From: Mohammad Tanvir Huda [mailto:shayer009@yahoo.com]
Sent: Thursday, August 12, 2004 8:29 PM
To: Andrew Janian
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Connecting Postgres using other network

I set the tcp_ip=true in postgresql.conf file. Isn't that the same thing while starting up postmaster with -i. Becasue i am starting up the server using pg_ctl .
 
Regards
 


Andrew Janian <ajanian@scottrade.com> wrote:
Are you using -i option when you start Postgres?  If not, it will not allow remote requests even if you have the ACL set correctly.
 
Andrew
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org]On Behalf Of Mohammad Tanvir Huda
Sent: Thursday, August 12, 2004 10:00 AM
To: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Connecting Postgres using other network


Hello
 
i have made some entry in pg_hba.conf so that it can accept call from other computers.
 
But it still giving me the same error .
 
Can anyone pls tell me what is wrong with that
 
Regards
Mohammad
Mohammad Tanvir Huda <shayer009@yahoo.com> wrote:
Hello All
Thanks for your reply.
i want to use the port 6432 because some other instance of Postgresql is running on default port 5432,. And the psql command in this port works fine.
 
/scratch/huda/bin/psql -p 6432 test
 
If i want to allow any ip to get access to database what should i do.
is the following this legal
 
host template1 all 192.*.*.*  255.255.255.0 ident sameuser
 
Because when i hooked my PC to network it is assigned a dynamic IP .
 
thirdly, as mentioned in previous email where can i find the psql client tool.
 
Regards
 
Tanvir


"Bender, Cheryl" <cbender@mriresearch.org> wrote:
A few things I would do;
 
1.  As other replies have mentioned check the port.  If you want to use 6432 I believe you have to put that in your conf file
2.  You need another line in your pg_hba.conf that provides access to the network or specific IP and netmask of the computer you are connecting from.  Lots of examples are found in the manual but I've put one below

# Allow any user from any host with IP address 192.168.93.x to connect

# to database "template1" as the same user name that ident reports for

# the connection (typically the Unix user name).

# TYPE DATABASE USER IP-ADDRESS IP-MASK METHOD

host template1 all 192.168.93.0 255.255.255.0 ident sameuser

3.  Verify you can connect locally with the settings (especially if you changed the port).
4.  If local connection works but your code still doesn't work, then verify you can connect from the client if possible using something other than jdbc (psql client tool or odbc).
5.  Check the log on the server.
 
Hope this helps some.
Cheryl
 
 

Cheryl Bender
-----Original Message-----
From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-owner@postgresql.org] On Behalf Of Mohammad Tanvir Huda
Sent: Wednesday, August 11, 2004 2:40 PM
To: pgsql-admin@postgresql.org
Subject: [ADMIN] Connecting Postgres using other network

Hello Everyone
 
I have installed Postgres server in a network and  i am trying to use the database using
Java code from other network.
 
I have set the tcp_ip=true in postgresql.conf file.
I have also add the follwing line in the pg_hba.conf

host    all         all        127.0.0.0          255.255.255.255   trust
 
Then i start the server in port 6432.
 
After that i want to access the application using the following javacode.
 
import java.sql.*;   // All we need for JDBC
import java.text.*;
import java.io.*;
public class HelloPost
{
  Connection       db;        // A connection to the database
  Statement        sql;       // Our statement to run queries with
  DatabaseMetaData dbmd;      // This is basically info the driver delivers
                              // about the DB it just connected to. I use
                              // it to get the DB version to confirm the
                              // connection in this example.
  public HelloPost()
    throws ClassNotFoundException, SQLException
  {
    String database = "test";
    String username = "abc";
    String password = "xyz";
    try{
     Class.forName("org.postgresql.Driver"); file://load the driver
        db = DriverManager.getConnection("jdbc:postgresql://abc.csse.uts.edu:6432:test",
                                     username,
                                     password); file://connect to the db
     dbmd = db.getMetaData(); file://get MetaData to confirm connection
     System.out.println("Connection to "+dbmd.getDatabaseProductName()+" "+
                       dbmd.getDatabaseProductVersion()+" successful.\n");
     sql = db.createStatement(); file://create a statement that we can use later
    }catch (ClassNotFoundException e) {
            System.err.println( "Driver not found: " + e + "\n" + e.getMessage() );
    }
    db.close();
  }
 public static void main (String args[])
   {
     try
     {
       HelloPost demo = new HelloPost();
     }
     catch (Exception ex)
     {
       System.out.println("***Exception:\n"+ex);
       ex.printStackTrace();
     }
   }
 }
But this give me the following error

Exception: org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the post
 accepting TCP/IP connections.
Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
Can anyone please tell me where is the error. what should i doo ..
 
regards
 
Shayer
 

Do you Yahoo!?
Yahoo! Mail - 50x more storage than other providers!

Do you Yahoo!?
Yahoo! Mail Address AutoComplete - You start. We finish.

Do you Yahoo!?
Yahoo! Mail - You care about security. So do we.

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New and Improved Yahoo! Mail - 100MB free storage!