Synchoronize two database at day End

Hi,
I have two databases one is live and other is the previous copy of live database(both have same structure), I want to synchronize both databases at day end(say one time a day), how Can I do this, Where I get information for this,
Thanx, Khawar.

If the database is on a SAN, you can always split the mirror at the end of the day.
You can also create a physical standby database, put it in managed recovery mode once a day, and leave it open for read only access for the rest of the day.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

Similar Messages

How can i compare two databases and their tables

i have a text.txt file then
i will insert it into db_header and db_details
db_header has tbl_pcountheader with fld_Rack_No(char) PK and fld_DateAdded(date) PK
db_details has tbl_pcountdetails with fld_Rack_No(char) PK, fld_Barcode(char) PK and fld_Quantity(int)
then i will lookup in db_products
db_products has tbl_products and tbl_barcodes
tbl_products has fld_ItemCode
tbl_barcodes has fld_Barcode and fld_ItemCode
now i want to make a prompt contains
Rack No: Date:
Counter No:
Barcode | Item Code | Item Description | Quantity
how can i fill up this by comparing db_details and db_products?
Private Sub bt_upload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt_upload.Click
If saveCheckBox.Checked = False Then
MsgBox("Please click the box to continue.")
Return
End If
If lb_file.SelectedItem Is Nothing Then
MessageBox.Show("Please select a file.")
Exit Sub
End If
' Obtain the file path from the list box selection.
Dim filePath = lb_file.SelectedItem.ToString
' Verify that the file was not removed since the Browse button was clicked.
If System.IO.File.Exists(filePath) = False Then
MessageBox.Show("File Not Found: " & filePath)
Exit Sub
End If
' Obtain file information in a string.
Dim fileInfoText As String = GetTextForOutput(filePath)
'LookUP db_header, db_details and db_products
Dim cs As String = "Database=;Data Source=localhost;" _
& "User Id=root;Password=1234"
Dim conn As New MySqlConnection(cs)
Dim ds As New DataSet
Dim da As New MySqlDataAdapter
Dim cmd As New MySqlCommand
Dim dt As New DataTable
Dim stm As String = "SELECT tbl_pcountheader.fld_Rack_No, tbl_pcountheader.fld_DateAdded, tbl_pcountdetails.fld_Barcode, tbl_products.fld_ItemCode, tbl_products.fld_ItemDesc, tbl_pcountdetails.fld_Quantity FROM db_header.tbl_pcountheader INNER JOIN db_details.tbl_pcountdetails ON db_details.tbl_pcountdetails.fld_Rack_No = db_header.tbl_pcountheader.fld_Rack_No INNER JOIN db_products.tbl_barcodes ON db_details.tbl_pcountdetails.fld_Barcode = db_products.tbl_barcodes.fld_Barcode INNER JOIN db_products.tbl_products ON db_products.tbl_barcodes.fld_ItemCode_fk = db_products.tbl_products.fld_ItemCode GROUP BY tbl_pcountheader.fld_Rack_No, tbl_pcountheader.fld_DateAdded ORDER BY tbl_pcountheader.fld_Rack_No"
ds = New DataSet
Try
conn.Open()
da = New MySqlDataAdapter(stm, conn)
da.Fill(ds, "tbl_pcountheader")
DataGridView1.DataSource = ds.Tables("tbl_pcountheader")
Dim headers = (From header As DataGridViewColumn In DataGridView1.Columns.Cast(Of DataGridViewColumn)() _
Select header.HeaderText).ToArray
Dim rows = From row As DataGridViewRow In DataGridView1.Rows.Cast(Of DataGridViewRow)() _
Where Not row.IsNewRow _
Select Array.ConvertAll(row.Cells.Cast(Of DataGridViewCell).ToArray, Function(c) If(c.Value IsNot Nothing, c.Value.ToString, ""))
Using sw As New IO.StreamWriter("c:\report.txt", append:=True)
sw.WriteLine(String.Join(",", headers))
For Each r In rows
sw.WriteLine(String.Join(",", r))
Next
End Using
ds.WriteXmlSchema("Sample.xml")
Dim cr As New CrystalReport1()
cr.SetDataSource(ds)
CrystalReportviewer1.ReportSource = cr
CrystalReportviewer1.Refresh()
Catch ex As MySqlException
MsgBox("Error: " & ex.ToString())
Finally
conn.Close()
End Try
' Show the file information.
Dim PrintPrompt As String
PrintPrompt = MsgBox(fileInfoText, MsgBoxStyle.YesNo, "ProofList")
If PrintPrompt = vbYes Then
'fileInfoText.print()
If saveCheckBox.Checked = True Then
' Place the log file in the same folder as the examined file.
Dim bakFolder As String = System.IO.Path.GetDirectoryName(filePath)
Dim bakFilePath = System.IO.Path.Combine(bakFolder, "back-up.bak")
Dim bakText As String = "Backed-Up: " & Date.Now.ToString & vbCrLf & fileInfoText & vbCrLf & vbCrLf
' Append text to the log file.
'System.IO.File.AppendAllText(bakFilePath, bakText)
My.Computer.FileSystem.WriteAllText(bakFilePath, bakText, append:=True)
'My.Computer.Network.UploadFile(bakFilePath, "C:\Documents and Settings\SAPC-TECH\My Documents\back-up file.bak", "", "", False, 1000)
'My.Computer.FileSystem.DeleteFile(bakFilePath)
'Form2.Show()
End If
'Note: This message box shows that you've uploaded a file and back up it.
MessageBox.Show("Already backed-up to ")
Else
'Me.Close()
'Application.Exit()
'End
End If
'Me.DialogResult = System.Windows.Forms.DialogResult.Cancel
'Form2.Close()
'Me.Close()
End Sub
here's my final code that solves my problem.
i just make the environment of vb into mysql console
so that i can call all the database that i wanted.

Private Sub bt_upload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt_upload.Click
If saveCheckBox.Checked = False Then
MsgBox("Please click the box to continue.")
Return
End If
If lb_file.SelectedItem Is Nothing Then
MessageBox.Show("Please select a file.")
Exit Sub
End If
' Obtain the file path from the list box selection.
Dim filePath = lb_file.SelectedItem.ToString
' Verify that the file was not removed since the Browse button was clicked.
If System.IO.File.Exists(filePath) = False Then
MessageBox.Show("File Not Found: " & filePath)
Exit Sub
End If
' Obtain file information in a string.
Dim fileInfoText As String = GetTextForOutput(filePath)
'LookUP comparison db_details to db_products
'Dim connString As String = "Database=db_products;Data Source=localhost;" & "User Id=root;Password=1234"
'Dim conn As New MySqlConnection(connString)
'Dim cmd As New MySqlCommand()
'Try
' conn.Open()
' cmd.Connection = conn
' cmd.CommandText = "SELECT Database1.dbo.TableName.ColumnName, Database2TableName.Name, 'The reason why Database 2 isnt defined is the fact that it has been defined in the connection" _
' FROM Database2TableName INNER JOIN _
' Database2TableName2 INNER JOIN _
' WHERE (Database1.dbo.TableName.ColumnName = '')"
' cmd.Prepare()
' cmd.ExecuteNonQuery()
' conn.Close()
'Catch ex As Exception
'End Try
' Show the file information.
Dim PrintPrompt As String
PrintPrompt = MsgBox(fileInfoText, MsgBoxStyle.YesNo, "ProofList")
If PrintPrompt = vbYes Then
'fileInfoText.print()
If saveCheckBox.Checked = True Then
' Place the log file in the same folder as the examined file.
Dim bakFolder As String = System.IO.Path.GetDirectoryName(filePath)
Dim bakFilePath = System.IO.Path.Combine(bakFolder, "back-up.bak")
Dim bakText As String = "Backed-Up: " & Date.Now.ToString & vbCrLf & fileInfoText & vbCrLf & vbCrLf
' Append text to the log file.
'System.IO.File.AppendAllText(bakFilePath, bakText)
My.Computer.FileSystem.WriteAllText(bakFilePath, bakText, append:=True)
'My.Computer.Network.UploadFile(bakFilePath, "C:\Documents and Settings\SAPC-TECH\My Documents\back-up file.bak", "", "", False, 1000)
'My.Computer.FileSystem.DeleteFile(bakFilePath)
Form2.Show()
End If
'Note: This message box shows that you've uploaded a file and back up it.
MessageBox.Show("Already backed-up to ")
Else
Me.Close()
Application.Exit()
End
End If
Me.DialogResult = System.Windows.Forms.DialogResult.Cancel
Form2.Close()
Me.Close()
End Sub
here's my code wherein i have to compare the two database and save it into .txt file
i just have to get this items
Rack No:
Date:
Counter No:
Barcode:
Item Code:
Item Description:
Quantity:
as a prooflist to be print out.

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Hi,
I am trying to setup a single listener to listen to two Databases running in the same system. We are experimenting a Network Architecture & this is a part of our experiment to see what happens..( most of the documentation I have read point out that running two DBs on a sing le system isn't a good idea..).
One of the Databases is an Oracle Application Server Infrastructure Metadata Respository ( OraInfra ). The other database has been configured for use with Oracle Content Database ( OraContentDB ) .
The two databases are up & running successfully - however, the problem is with the listener. The two listener.ora files are as follows :-
# listener.ora Network Configuration File: C:\oracle\product\10.2.0\OraContentDB\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oracle\product\10.2.0\OraContentDB)
      (PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1522))
)and
# listener.ora Network Configuration File: C:\OraInfra\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\OraInfra)
      (PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1521))
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1522))
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)However, everytime I try to connect via SQLPLUS, I can only connect via the first Listener. If I try to connect via the second listener, I only get this error :-
SQL> connect scott/tiger@localhost:1522/CONTENTDB
ERROR:
ORA-12541: TNS:no listenerCan anyone shed some light on this ?
Thanks,
Sandeep

Hi,
Thanks to everyone for your time ! Yes, I now have an understanding of the architecture & I am trying to set up my listener...
Paul, I reconfigured my Listener.ora and started it :-
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\OraInfra)
      (PROGRAM = extproc)
    (SID_DESC =
      (GLOBAL_DBNAME = ORAINFRA.idc.oracle.com)
      (ORACLE_HOME = C:\OraInfra)
      (SID_NAME = ORAINFRA)
    (SID_DESC =
      (GLOBAL_DBNAME = CONTENTDB.idc.oracle.com)
      (ORACLE_HOME = C:\oracle\product\10.2.0\OraContentDB)
      (SID_NAME = CONTENTDB)
LISTENER =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1521))
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)I started the listener from the command line and this si what I see :-
C:\OraInfra\bin>c:\OraInfra\bin\lsnrctl
LSNRCTL for 32-bit Windows: Version 10.1.0.4.2 - Production on 16-AUG-2006 10:12
:38
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> start
Starting tnslsnr: please wait...
TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Production
System parameter file is C:\OraInfra\network\admin\listener.ora
Log messages written to C:\OraInfra\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=152
1)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=152.69.191.100)(PORT=152
1)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Produ
ction
Start Date                16-AUG-2006 10:12:45
Uptime                    0 days 0 hr. 0 min. 2 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\OraInfra\network\admin\listener.ora
Listener Log File         C:\OraInfra\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
Services Summary...
Service "CONTENTDB.idc.oracle.com" has 1 instance(s).
Instance "CONTENTDB", status UNKNOWN, has 1 handler(s) for this service...
Service "ORAINFRA.idc.oracle.com" has 1 instance(s).
Instance "ORAINFRA", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>It didn't look suspicious to me I had a peek at the Listener.Log :-
TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Production on 16-AUG-2006 10:12:43
Copyright (c) 1991, 2004, Oracle. All rights reserved.
System parameter file is C:\OraInfra\network\admin\listener.ora
Log messages written to C:\OraInfra\network\log\listener.log
Trace information written to C:\OraInfra\network\trace\listener.trc
Trace level is currently 0
Started with pid=3308
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
16-AUG-2006 10:12:45 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=balajsub))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=168821762)) * status * 0
16-AUG-2006 10:12:46 * service_died * 1183The message "service_died" looked fishy & I tried to conect :-
C:\OraInfra\bin>sqlplus /nolog
SQL*Plus: Release 10.1.0.4.2 - Production on Wed Aug 16 10:18:26 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> connect scott/[email protected]:1521/ORAINFRA.idc.oracle.com
SQL> Connected
SQL> connect scott/[email protected]:1521/CONTENTDB.idc.oracle.com
ERROR:
ORA-12537: TNS:connection closedI now understand that the Listener is trying to open a connection to the Database - but, I am not sure why the connection dies with with the ORA-12537 error. It looks like the error is somewhere deeper in the TNS Layer...
Can you throw some light on this as well ?
Regards,
Sandeep

Trigger in a join table between two database

Hi an Happy new year
I have two database, one is dedicated to security and the second for my multitenancy application
In this two databases one have tables USER, USER_JOIN_USER_ROLE and USER_ROLE
the second, USER (where fields are differents), USER_JOIN_USER_ROLE and USER_ROLE
the two join table must be the same and USER_ROLE are the same in the two databases.
I plan to use a trigger to replicate from the application database to the security one, I already use triggers to Replicate USER and set the differents fields.
I'm new in triggers using.
My user replication trigger seems like that
CREATE TRIGGER [dbo].[USER_REPLICATION]
ON [dbo].[DM_USER]
AFTER INSERT
AS
BEGIN
DECLARE @EmployeeId int = (SELECT FKEmployee FROM inserted)
DECLARE @Login nvarchar(50) = (SELECT LoginUser FROM Inserted)
DECLARE @Password nvarchar(50) = (SELECT PasswordUser FROM Inserted)
DECLARE @Tenant int = (SELECT IdCompany FROM TEST_MULTI.dbo.DM_COMPANY WHERE IsTenant = ''Y'')
DECLARE @CompanyId int = (SELECT ExtIdCompany FROM TEST_MULTI.dbo.DM_COMPANY WHERE IsTenant = ''Y'')
DECLARE @LegalEntityId int = (SELECT FKLegalEntity FROM TEST_MULTI.dbo.DM_EMPLOYEE WHERE IdEmployee = @EmployeeId)
DECLARE @LastName nvarchar(255) = (SELECT LastNameEmployee FROM TEST_MULTI.dbo.DM_EMPLOYEE WHERE IdEmployee = @EmployeeId)
DECLARE @FirstName nvarchar(255) = (SELECT FirstNameEmployee FROM TEST_MULTI.dbo.DM_EMPLOYEE WHERE IdEmployee = @EmployeeId)
DECLARE @EMail nvarchar(255) = (SELECT EMail FROM inserted)
SET NOCOUNT ON;
INSERT INTO DM_SECURITY_MASTER.dbo.DM_USER(LoginUser, PasswordUser, FKCompany, TenantId, LegalEntityId, LastName, FirstName, Email)
VALUES (@Login, @Password, @CompanyId, @Tenant, @LegalEntityId, @LastName, @FirstName, @EMail)
UPDATE [TEST_MULTI].[dbo].[DM_USER] SET ExtIdUser = (SELECT IdUser FROM [DM_SECURITY_MASTER].[dbo].[DM_USER]
WHERE LoginUser = @Login
AND PasswordUser = @Password
AND FKCompany = @CompanyId
AND TenantId = @Tenant
AND LegalEntityId = @LegalEntityId
AND LastName = @LastName
AND FirstName = @FirstName
AND EMail = @EMail)
WHERE IdUser = (SELECT IdUser FROM Inserted)
END
but I cannot figure how to use a trigger to update a collection and not find anything on it, any help welcome
I use Windows Identity Foundation in my code and update or insert can set multiple rows

Hello and thanks for help.
The trigger i give as example already works fine but Fanny Liu is for sure better than mine and I will try it. Users insertions are not multiple, only one user can be inserted at the same time
My question was most on using triggers to update a collection via a Join table between my user and users roles
I wrote it Yesterday for INSERT
USE [TEST_MULTI]
GO
/****** Object: Trigger [dbo].[USER_ROLE_INSERT_REPLICATION] Script Date: 01/03/2014 10:56:36 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:
-- Create date: 2014/02/01
-- Description: Replication INSERT on MASTER DATABASE
-- =============================================
ALTER TRIGGER [dbo].[USER_ROLE_INSERT_REPLICATION]
ON [TEST_MULTI].[dbo].[DM_USER_JOIN_USER_ROLE]
AFTER INSERT
AS
DECLARE InsertCursor CURSOR FOR (SELECT FKUser, FKUserRole FROM inserted)
DECLARE @UserId int, @UserRoleId int
OPEN InsertCursor
FETCH NEXT FROM InsertCursor INTO @UserId, @UserRoleId
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @UserMasterId int = (SELECT ExtIdUser FROM TEST_MULTI.dbo.DM_USER WHERE IdUser = @UserId)
IF NOT EXISTS(SELECT * FROM DM_SECURITY_MASTER.dbo.DM_USER_JOIN_USER_ROLE WHERE FKUser = @UserMasterId
AND FKUserRole = @UserRoleId)
INSERT INTO DM_SECURITY_MASTER.dbo.DM_USER_JOIN_USER_ROLE (FKUser, FKUserRole) VALUES (@UserMasterId, @UserRoleId)
FETCH NEXT FROM InsertCursor INTO @UserId, @UserRoleId
END
CLOSE InsertCursor;
DEALLOCATE InsertCursor;
And for DELETE
USE [TEST_MULTI]
GO
/****** Object: Trigger [dbo].[USER_ROLE_DELETE_REPLICATION] Script Date: 01/03/2014 10:57:58 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:
-- Create date: 2014/02/01
-- Description: Replicate DELETE on MASTER DATABASE
-- =============================================
ALTER TRIGGER [dbo].[USER_ROLE_DELETE_REPLICATION]
ON [TEST_MULTI].[dbo].[DM_USER_JOIN_USER_ROLE]
AFTER DELETE
AS
DECLARE DeleteCursor CURSOR FOR (SELECT FKUser, FKUserRole FROM deleted)
DECLARE @UserId int, @UserRoleId int
OPEN DeleteCursor
FETCH NEXT FROM DeleteCursor INTO @UserId, @UserRoleId
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @UserMasterId int = (SELECT ExtIdUser FROM TEST_MULTI.dbo.DM_USER WHERE IdUser = @UserId)
DELETE FROM DM_SECURITY_MASTER.dbo.DM_USER_JOIN_USER_ROLE WHERE FKUser = @UserMasterId AND FKUserRole = @UserRoleId
FETCH NEXT FROM DeleteCursor INTO @UserId, @UserRoleId
END
CLOSE DeleteCursor;
DEALLOCATE DeleteCursor;
It works fine
Thanks for help, I will mark it as answered

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Thanks and everybody have a nice day¡¡¡¡¡

Do you mean does it run in a browser on Ubuntu or do you want to run the application server on Ubuntu ?

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I had a problem which is my ipod shuffle suddenly emptied after two to three days i left in my room. What's the problem actually can be turn be like this since it's the first time i through it..please send me an email regarding this at [email protected] Thank You!

Okay, and thanks for re-posting your photos. I have to agree that it definitely does look like crimping and would expect any continuity checks run on it to show an open or two. That would certainly explain your symptoms, but it's not the answer for all such cases, i.e., BLD, being reported here.
I've now purchased two 'broken' Shuffle's on eBay, both coming off of M$ systems and reporting the blinkies. The first was Alive on Arrival and is still living happily on a daughter's eMac. The second was totally dead, with no reaction at all to anything I did; it's now disassembled, with no evidence of your crimping on the ribbon cable, while I mull over buying an LI battery and getting someone to solder it in for me.
In your place I'd certainly be taking my evidence to Apple and pointing out that, at the end of the day, it was just a matter of pure luck that it managed to last as long with this defect as it did. I think you should be able to convince them to give you some sort of satisfaction on this, but appreciate your desire not to go through the bother of it.

Using RMI to synchronize two databases

Hello
I have studied Java for some time, but never had
the opportunity to work in a "real project", but
now I have something to do...
I have the following situation: two offices
of a company, the central one running SQL Server
database and other running Oracle, must change
information, reading data from Oracle and saving in
SQLServer and vice-versa. The programs should be
running all day, checking at specified periods of
time if there is some information to be updated
in any database.
The offices are phisically far, so it should be
used Internet to make the connection (both sites
are connected to Internet 24h).
I was wondering on using the Java RMI technology
to achieve this. I have read the official Sun
documentation about RMI and some articles, and I
found it very interesting, and pretty easy to
implement.
But I have some "real world" questions:
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there is some newer or more adequate one?
- At first it would be a small amount of data
to be synchronized, but if it grows a lot or
more offices are to be connected, is RMI performance
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the application?
- What is the relationship between RMI and proxies,
firewalls etc? Are they compatible?
- XML is something to think about using for this
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The initial option was using a Microsoft solution
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Here's a set of (some) answers based on my experience (which is NOT synchronizing two databases, but on synchronizing sets of files across a tree of file servers.)
Hello
1. It sounds like two databases must be cross-synchronized. You didn't say what the platforms were, but if they are mixed, then java is a positive choice.
2. Java rmi is fine for doing this kind of work. However I can't give you any performance guarantees. You probably need to get some fine requirements and write some model programs.
3. YOU are responsible for security. RMI gives you connectability; you have to develop some kind of cross-authentication procedure as part of you application.
4. To work over the internet, you will have to develop some way through firewalls.
o If the two sites use "Virtual private networks", then both the security issue and the firewall issue are mostly solved for you.
o Otherwise, and maybe even with vpn, you will have to do a little bit of work to use fixed port numbers. (The way rmi works is that there is a listener at a fixed port which will let a remote program "look up" a local object; after that, communication takes place object-object over a randomly-assigned port.) It takes about a dozen lines of code to make this work.
5. I don't think XML has anything to do with this problem. It MAY help you if you have serious data conversion issues. I hear it's a pig.
Finally, an application item that may or may not be an issue: Two databases, two platforms == possible character set conversion problems.

How to configurate system for two database under one server

Hi Friends,
I installed abd created A database by oracle 10GR4 in window 32 bit 2003.
it works.
Then i created other B database by DBCA under this server.
When I shutdown immediate database.
it works well. But I can not startup mount ot startup A database again,
I got below message as
SQL> startup mount;
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist
SQL> startup;
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist
SQL> startup;
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist
From EM, I saw as
A listen Status Up
LISTENER
Oracle Home
C:\oracle\product\10.2.0\db_1\BIN
Location
C:\oracle\product\10.2.0\db_1\BIN\network\admin
BUT agent connect Status
Failed
Details          ORA-12505: TNS:listener does not currently know of SID given in connect descriptor (DBD ERROR: OCIServerAttach)
A database instance down
Host     salerpt.net
Port 1521
SID SALERPT
Oracle Home C:\oracle\product\10.2.0\db_1\BIN
Also I try to connect as
SQL> connect sys/salel@salerpt as sysdba;
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
Form EM, I saw listen start up.
Then I stop it. then restart it
I can saw B db listen and can not see A db listen.
also
I saw that other B database works.
My listen info as***************
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1\BIN)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = SALERPT.NET)(PORT = 1521))
I check physical, two database use one common bin directory .
I do not have any experience to handle two database under one oracle server.
How to check and configurate DB server system?
Thanks for help.
Edited by: user589812 on Jan 4, 2009 8:17 AM

Jim,
Before starting the database A, did you set ORACLE_SID=A from command line? You can run as many instances you want from single server provided you enough memory, processing power. Also try starting your instances usign window services and check and post some lines from alert.log for database A.
tnsnames.ora entry
DATABASE_A =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = salesrpt.net)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DATABASE_A)
DATABASE_B =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = salesrpt.net)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DATABASE_B)
)Regards
Edited by: OrionNet on Jan 5, 2009 10:55 AM

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Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
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