1. Install MySQL: Ensure that MySQL is installed on the target system. If not, download and install it from the official MySQL website.

2. Create a Database: Log in to MySQL and create a new database where you will import the DB2 data.

   ```

   CREATE DATABASE target_database;

   ```

3. Create Tables: Define the schema in MySQL that matches the DB2 source. Ensure that data types are compatible and consider differences between DB2 and MySQL data types.

   ```

   USE target_database;

   CREATE TABLE example_table (

       column1 INT,

       column2 VARCHAR(255),

       ...

   );

   ```

1. Connect to DB2: Use the DB2 command line tool to connect to your DB2 database.

   ```

   db2 connect to source_database user myusername using mypassword

   ```

2. Export Data: Use the `EXPORT` command to export data from the DB2 tables to delimited text files or CSV files.

   ```

   db2 "EXPORT TO '/path_to_exported_file/table_name.csv' OF DEL TYPE MODIFIED BY NOCHARDEL SELECT * FROM schema_name.table_name"

   ```

   Repeat this step for each table you want to migrate.

1. Check Data Types: Review the exported data for any data types that may not be directly compatible with MySQL and convert them accordingly.

2. Date/Time Formats: Convert any date/time values to formats supported by MySQL.

3. Character Encoding: Ensure the character encoding in the exported files matches the encoding expected by MySQL (e.g., UTF-8).

1. Prepare MySQL for Import: Log in to MySQL and select the target database.

   ```

   mysql -u username -p

   USE target_database;

   ```

2. Disable Constraints: Temporarily disable foreign key checks to avoid constraint violations during import.

   ```

   SET FOREIGN_KEY_CHECKS=0;

   ```

3. Import Data: Use the `LOAD DATA INFILE` command to import the data from the CSV files into the corresponding MySQL tables.

   ```

   LOAD DATA INFILE '/path_to_exported_file/table_name.csv'

   INTO TABLE example_table

   FIELDS TERMINATED BY ','

   OPTIONALLY ENCLOSED BY '"'

   LINES TERMINATED BY '\n'

   IGNORE 1 LINES;

   ```

   Adjust field terminators and line terminators according to the format of your exported files. Repeat this step for each table.

4. Re-enable Constraints: Once all data is imported, re-enable foreign key checks.

   ```

   SET FOREIGN_KEY_CHECKS=1;

   ```

1. Check Data Counts: Compare the row counts in MySQL tables with the original DB2 tables to ensure all data was imported.

   ```

   SELECT COUNT(*) FROM example_table;

   ```

2. Check Data Quality: Perform queries on both databases to compare random sets of data and ensure they match.

1. Indexing: Create any necessary indexes on the MySQL tables to optimize performance.

2. Optimization: Run `ANALYZE TABLE` on the imported tables to update table statistics for better performance.

   ```

   ANALYZE TABLE example_table;

   ```

3. Backup: Take a backup of the MySQL database after the migration to ensure you have a recovery point.

1. Update Applications: Change the database connection settings in any applications that need to connect to the new MySQL database.

2. Test: Thoroughly test your applications to ensure they function correctly with the new MySQL database.

3. Monitoring: Monitor the MySQL database for performance and stability issues.

Additional Notes

- The above commands are examples and may need to be adjusted based on your specific environment, table names, schema, data types, and file paths.

- Always perform a migration on a test environment before applying it to production.

- Make sure to have backups of both the DB2 and MySQL databases in case you need to roll back.

- Review MySQL's documentation for any version-specific features or limitations.

By following these steps, you should be able to migrate your data from IBM DB2 to MySQL without using third-party connectors or integrations. Remember to proceed with caution and test thoroughly at each step.