which best technology or way I can get data from db2 and run it on sql

Hi Ahemed,

As per suggestion by Sam Hobbs, you can mirate DB2 to SQL Server using below links

https://learn.microsoft.com/en-us/sql/ssma/db2/migrating-db2-databases-to-sql-server-db2tosql?view=sql-server-ver16

https://hevodata.com/learn/db2-to-sql-server/

Also see:

Migrating DB2 Databases to SQL Server (DB2ToSQL)
https://learn.microsoft.com/en-us/sql/ssma/db2/migrating-db2-databases-to-sql-server-db2tosql?view=sql-server-ver16
 

Apparently it is a tool Microsoft created that is specialized for this.

If you want copy one database data to another database you can use below query syntax in sql server

USE DestinationDatabase;
INSERT INTO dbo.DestinationTable (Column1, Column2, Column3)
SELECT Column1, Column2, Column3
FROM SourceDatabase.dbo.SourceTable;

To efficiently transfer a large amount of data from a DB2 database to a SQL Server 2019 database using ASP.NET Core 7 and .NET technologies, you can use the following approaches:

1. **Bulk Copy (BCP)**: SQL Server provides the Bulk Copy Program (BCP) utility that allows you to efficiently copy large amounts of data between SQL Server and other data sources, including DB2. You can use the `bcp.exe` utility from the command line or programmatically invoke it from your .NET application using `Process.Start()`.

2. **SQL Server Integration Services (SSIS)**: SSIS is a powerful ETL (Extract, Transform, Load) tool provided by Microsoft to perform data integration and transformation tasks. You can use SSIS to create data flows that extract data from DB2 and load it into SQL Server.

3. **SQL Server Linked Server**: SQL Server allows you to set up a linked server to DB2, which allows you to execute queries directly from SQL Server to fetch data from DB2 and insert it into the SQL Server database. This can be done using SQL Server Management Studio or programmatically using SQL queries.

4. **Entity Framework Core (EF Core)**: If you prefer to work with .NET technologies, you can use Entity Framework Core to connect to both the DB2 and SQL Server databases. Fetch data from DB2 using EF Core and then insert it into SQL Server using EF Core's context and entities. While this approach may not be the fastest, it provides a more object-oriented and code-first approach to data manipulation.

5. **Third-Party ETL Tools**: There are several third-party ETL tools available that specialize in data integration and migration between different databases. Some popular ones include Talend, Informatica, and Pentaho. These tools often provide a visual interface to design data flows and automate the transfer of data.

Before choosing an approach, consider the complexity of your data, the frequency of data transfers, the available resources, and the desired level of automation. For a one-time data migration, BCP or SSIS might be the fastest options. For ongoing data synchronization, a linked server or Entity Framework Core approach might be more suitable.

Always perform tests and benchmarking to identify the most efficient solution for your specific scenario. Additionally, consider factors like network speed, database configurations, and hardware resources to ensure optimal performance during data transfer.