LKM SQL to SQL FAQS

1. What is LKM SQL to SQL?
•  LKM SQL to SQL is a Knowledge Module (KM) in Oracle Data Integrator (ODI) used for transferring data from one SQL database (source) to another SQL database (target). It leverages SQL SELECT and SQL INSERT commands to perform the data extraction and loading.
2. How does LKM SQL to SQL work?
•  The process works by connecting to both the source and target SQL databases. The ODI agent executes SQL queries to extract data from the source database and load it into the target database. Temporary objects, such as staging tables, may be used during the process but are cleaned up afterward.
3. When should I use LKM SQL to SQL?
•  Use LKM SQL to SQL when both your source and target are SQL databases (e.g., Oracle, SQL Server, MySQL) and you want to efficiently transfer data between them. It is ideal for structured, relational data with SQL-based extraction and loading.
4. What are the main steps involved in LKM SQL to SQL?
•  The steps include:
1. Setting up connections to the source and target SQL databases.
2. Extracting data from the source using SQL SELECT queries.
3. Loading the extracted data into the target using SQL INSERT queries.
4. Running the SQL commands via the ODI agent.
5. Dropping temporary objects or staging tables once the process completes.
5. Can I modify the SQL commands used by LKM SQL to SQL?
•  Yes, you can review and modify the SQL commands used by this LKM by accessing the Knowledge Module in ODI Studio. This gives you flexibility to customize the data extraction and loading processes to suit your specific needs.
6. What databases are supported by LKM SQL to SQL?
•  LKM SQL to SQL is designed for SQL-based databases. This includes popular systems like Oracle, SQL Server, MySQL, and others that support SQL querying and manipulation.
7. How does the ODI agent fit into LKM SQL to SQL?
•  The ODI agent is responsible for executing the SQL queries that extract data from the source and insert it into the target database. It handles the data transfer and ensures the integration flow proceeds smoothly.
8. Are temporary tables used during LKM SQL to SQL?
•  Yes, temporary tables (often prefixed with "C$") may be used in the staging area during the data loading process. These temporary objects help facilitate the extraction and loading but are dropped once the process is complete.
9. Can I use LKM SQL to SQL for large datasets?
•  Yes, LKM SQL to SQL can handle large datasets as long as the source and target databases are capable of processing them. However, performance might vary depending on the size of the data, available system resources, and database configurations.
10. How do I troubleshoot errors in LKM SQL to SQL?
•  If errors occur, you can review the log files generated during the execution of the ODI agent to identify the issue. Additionally, you can access the Knowledge Module in ODI Studio to ensure the correct SQL queries are being executed and make any necessary adjustments.