Are you stuck with an AWS Glue job that refuses to work its magic on your on-prem Oracle table? You’re not alone! Many data engineers and analysts have faced this frustrating issue, but fear not, dear reader, for we’re about to dive into a step-by-step guide to resolve this problem once and for all.
Understanding the Issue
Before we dive into the solution, let’s understand the issue at hand. AWS Glue is a fully managed extract, transform, and load (ETL) service that makes it easy to prepare and load data for analysis. However, when it comes to connecting to on-prem Oracle tables, things can get a bit tricky.
Common Error Messages
If you’re experiencing issues with your AWS Glue job, you might have seen error messages like:
- ORA-12541: TNS:no listener
- ORA-12170: TNS:Connect timeout occurred
- ORA-28547: connection to server failed, probable Oracle Net administrator error
Don’t worry; we’ll tackle these errors and get your AWS Glue job up and running in no time!
Prerequisites
Before we begin, make sure you have the following:
- AWS Glue account with the necessary permissions
- On-prem Oracle database with a compatible version (11g or later)
- Oracle Net Manager (optional but recommended)
- AWS Glue job created with the Oracle connection type
If you haven’t set up your AWS Glue job yet, don’t worry! We’ll cover that in the next section.
Setting Up Your AWS Glue Job
Follow these steps to create a new AWS Glue job or modify an existing one:
- In the AWS Management Console, navigate to the AWS Glue dashboard and click on “Jobs” in the left-hand menu.
- Click on “Create job” and select “Oracle” as the source type.
- Fill in the required details, including the JDBC URL, username, and password for your Oracle database.
- Make sure to select the correct Oracle driver version compatible with your database version.
- Choose the table you want to extract data from and configure any additional settings as needed.
- Click “Create job” to save your changes.
Now that we have our AWS Glue job set up, let’s dive into the solution to our issue.
Solution: Resolving the Issue with AWS Glue Job
The issue with AWS Glue job on-prem Oracle table to cloud usually stems from configuration or connectivity problems. Let’s tackle these one by one:
1. Oracle Net Manager Configuration
Oracle Net Manager is a utility that helps manage Oracle Net Services, including listener configuration. If you haven’t already, download and install Oracle Net Manager on your on-prem Oracle database server.
sqlnet.ora file:
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
listener.ora file:
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = )(PORT = 1521))
)
In the above code snippet, replace `` with your Oracle database server hostname or IP address.
2. Listener Configuration
Ensure your listener is running and configured correctly:
lsnrctl start LSNRCTL> status Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=)(PORT=1521))) Status of the Listener ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 19.0.0.0.0 - Production Start Date 2023-02-20 14:30:45 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /oracle/network/admin/listener.ora Listener Log File /oracle/log/listener.log
Verify that the listener is running and the status is “up.”
3. Oracle Database Configuration
Check your Oracle database configuration to ensure:
- The database is started and available.
- The ORACLE_SID and ORACLE_HOME environment variables are set correctly.
- The TNS_ADMIN environment variable points to the correct directory containing the tnsnames.ora file.
echo $ORACLE_SID echo $ORACLE_HOME echo $TNS_ADMIN
Verify the values match your Oracle database configuration.
4. AWS Glue Job Configuration
Review your AWS Glue job configuration to ensure:
- The Oracle connection type is selected.
- The JDBC URL, username, and password are correct.
- The Oracle driver version is compatible with your database version.
jdbc:oracle:thin:@//:1521/
Verify the JDBC URL matches your Oracle database configuration.
5. Security Group and Firewall Configuration
Check your security group and firewall configurations to ensure:
- The security group associated with your AWS Glue job allows outbound traffic to your on-prem Oracle database server.
- The firewall rules on your on-prem Oracle database server allow inbound traffic from the AWS Glue job.
Verify the security group and firewall configurations allow communication between your AWS Glue job and on-prem Oracle database server.
Conclusion
By following these steps and verifying your configurations, you should be able to resolve the issue with your AWS Glue job on-prem Oracle table to cloud. Remember to troubleshoot each component systematically, and don’t hesitate to reach out to AWS support if you need further assistance.
| Component | Configuration |
|---|---|
| Oracle Net Manager | sqlnet.ora and listener.ora files |
| Listener | Running and configured correctly |
| Oracle Database | Started, available, and correctly configured |
| AWS Glue Job | Oracle connection type, JDBC URL, username, and password correct |
| Security Group and Firewall | Allowing outbound and inbound traffic between AWS Glue job and on-prem Oracle database server |
Happy troubleshooting, and may the data flow smoothly!
Additional Resources
For further assistance, refer to the following resources:
- AWS Glue documentation: https://docs.aws.amazon.com/glue/latest/dg/aws-glue-programming-etl.html
- Oracle Net Manager documentation: https://docs.oracle.com/en/database/oracle/oracle-database/19/netrf/configuring-oracle-net-manager.html#GUID-1A2A2C3D-65C5-4B36-933A-55D2EE9F5F7F
Frequently Asked Question
Hey there! Are you stuck with AWS Glue job while trying to integrate your on-prem Oracle table to the cloud? Don’t worry, we’ve got you covered! Check out these FAQs to resolve some common issues you might be facing.
Q1: Why is my AWS Glue job failing to connect to my on-prem Oracle table?
Check if you have configured the Oracle connection details correctly in your AWS Glue job. Ensure that the hostname, port, username, and password are accurate. Also, make sure that the Oracle database is reachable from AWS Glue by checking the security group rules and network configurations.
Q2: How can I troubleshoot issues with my AWS Glue job related to Oracle table connections?
Enable debug logging in your AWS Glue job to get detailed logs about the execution. You can do this by adding the `–debug` option when running your job. This will help you identify the exact error message and troubleshoot the issue more effectively. Additionally, check the AWS Glue job runs page for any error messages or warnings.
Q3: What are the common issues I might face while using AWS Glue to integrate with an on-prem Oracle table?
Some common issues you might encounter include connection timeouts, authentication failures, data type mismatches, and network connectivity problems. You may also face issues with data partitioning, especially if your Oracle table is very large. Make sure to optimize your AWS Glue job configuration to handle these scenarios.
Q4: Can I use AWS Glue to perform real-time data replication from my on-prem Oracle table to the cloud?
Yes, AWS Glue can be used for real-time data replication from your on-prem Oracle table to the cloud. You can use AWS Glue’s change data capture (CDC) feature to capture changes in your Oracle table and replicate them to your target systems in near real-time. This allows you to keep your cloud-based systems in sync with your on-prem Oracle table.
Q5: What are the benefits of using AWS Glue to integrate my on-prem Oracle table with the cloud?
Using AWS Glue to integrate your on-prem Oracle table with the cloud provides several benefits, including scalability, reliability, and cost-effectiveness. AWS Glue allows you to handle large volumes of data, provides real-time data replication, and supports various data formats and targets. Additionally, AWS Glue is a fully managed service, which means you don’t need to worry about the underlying infrastructure.
