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Table of Contents
Implementing the policy of synchronizing Oracle and SQLServer
Using ETL Tools
Using database replication technology
Use third-party synchronization tools
Custom script synchronization
Performance optimization and best practices
Summarize
Home Database Oracle Implement synchronization between Oracle database and SQLServer database

Implement synchronization between Oracle database and SQLServer database

Jun 04, 2025 pm 09:57 PM
oracle python tool ai sqlserver data migration Database synchronization data lost red

Methods to synchronize Oracle with SQLServer include the use of ETL tools, database replication technology, third-party synchronization tools, and custom scripts. 1. ETL tools such as Informatica and Talend can be used for data extraction, conversion and loading. 2. Oracle's GoldenGate and SQLServer's Replication Services provide real-time or near-real-time synchronization. 3. Third-party tools such as Debezium and Attunity provide simplified configuration and powerful synchronization capabilities. 4. Custom scripts can be flexibly customized according to your needs using Python or Java.

Implement synchronization between Oracle database and SQLServer database

In data management, data synchronization across different database systems is one of the common needs, especially when enterprises need to exchange data between Oracle and SQLServer. Today we will discuss how to synchronize Oracle database and SQLServer database.

Implementing the policy of synchronizing Oracle and SQLServer

When considering how to synchronize Oracle and SQLServer databases, the first thing to be clear is the direction and frequency of synchronization. Do you need real-time synchronization or regular synchronization? Is it one-way synchronization or two-way synchronization? These issues will affect the tools and methods you choose.

Using ETL Tools

ETL (Extract, Transform, Load) tools are common choices for implementing database synchronization. Tools like Informatica and Talend can help you extract data from Oracle and load it into SQLServer after necessary transformations. The advantage of ETL tools is that they provide rich data conversion capabilities and scheduling capabilities to meet complex synchronization needs.

However, configuration and maintenance of ETL tools may require certain learning curves and costs. Especially for small projects, the complexity of ETL tools may seem a bit overkill.

 -- Extract data from Oracle SELECT * FROM oracle_table;

-- Loading data in SQLServer INSERT INTO sqlserver_table (column1, column2)
SELECT column1, column2 FROM oracle_table;

Using database replication technology

Oracle's GoldenGate and SQLServer's Replication Services are two powerful database replication technologies. They enable real-time or near-real-time data synchronization, ideal for scenarios where high availability and low latency are required.

Using GoldenGate, you can set Oracle as the source database and SQLServer as the target database, and synchronize data to SQLServer by capturing Oracle's change logs (Redo Logs).

 -- Oracle GoldenGate Configuration Example EXTRACT extora
USERIDALIAS extora DOMAIN oracle.com
EXTTRAIL ./dirdat/aa
TABLE oracle_table;

-- SQLServer Replication Configuration Example USE AdventureWorks;
GO
EXEC sp_addsubscription @publication = N'AdvWorksSalesOrdersMerge', @subscriber = N'SQLSERVER', @destination_db = N'AdventureWorksReplica';
GO

However, setting up and managing database replication technologies requires expertise and are costly. This may not be the best option for small projects or teams with limited budgets.

Use third-party synchronization tools

There are many third-party tools on the market, such as Debezium, Attunity, etc., which can help synchronize data between Oracle and SQLServer. These tools usually provide a simplified configuration interface and powerful synchronization capabilities that meet most synchronization needs.

When using these tools, you need to evaluate their performance, reliability, and cost. Some tools may perform poorly when dealing with large amounts of data, or are not flexible enough in complex synchronization scenarios.

 -- Configure Oracle to SQLServer synchronization using Debezium{
  "name": "oracle-connector",
  "config": {
    "connector.class": "io.debezium.connector.oracle.OracleConnector",
    "tasks.max": "1",
    "database.hostname": "oracle-host",
    "database.port": "1521",
    "database.user": "debezium",
    "database.password": "dbz",
    "database.dbname": "ORCLPDB1",
    "database.server.name": "server1",
    "table.whitelist": "oracle_table"
  }
}

Custom script synchronization

If you have some experience in programming, you can consider writing custom scripts to achieve data synchronization. Using languages ??such as Python and Java, you can extract data from Oracle and then connect to SQLServer through JDBC or ODBC for data loading.

The advantage of this method is its high flexibility and can be customized according to specific needs. However, custom scripts require more development and maintenance and may not be as good as professional tools in terms of performance and reliability.

 import cx_Oracle
import pyodbc

# Extract data from Oracle conn = cx_Oracle.connect('username/password@host:port/SID')
cursor = conn.cursor()
cursor.execute('SELECT * FROM oracle_table')
rows = cursor.fetchall()

# Loading to SQLServer
conn_sql = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server};SERVER=server;DATABASE=database;UID=username;PWD=password')
cursor_sql = conn_sql.cursor()
for row in rows:
    cursor_sql.execute('INSERT INTO sqlserver_table (column1, column2) VALUES (?, ?)', row[0], row[1])
conn_sql.commit()

Performance optimization and best practices

Performance optimization is a key issue when implementing database synchronization. Here are some suggestions:

  • Batch processing : Try to use batch operations to reduce the overhead of database connections and transactions.
  • Incremental synchronization : Only synchronizes the changed data, rather than synchronizes it in full every time, which can greatly improve synchronization efficiency.
  • Monitoring and logging : Set up monitoring and logging systems to promptly discover and deal with possible problems during synchronization.
  • Data consistency : Ensure data remains consistent during synchronization and avoid data loss or duplication.

Summarize

There are many ways to implement database synchronization between Oracle and SQLServer, and each method has its advantages and disadvantages. Which method to choose depends on your specific needs, budget and technical capabilities. In actual operation, it is recommended to start with small-scale testing, gradually expand to the production environment, and continuously optimize the synchronization strategy.

I hope this article can provide you with some useful insights and practical guidance to help you better achieve database synchronization.

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