How to Fix the Error \"The SQL Tuning Module is Not Installed on This Machine\" in Toad for Oracle
If you are using Toad for Oracle and want to launch SQL Optimizer from within Toad, you may encounter the following error message:
The SQL Tuning module is not installed on this machine. The tuning options will be disabled.
This error means that Toad cannot find the SQL Optimizer executable file (TOADSQLTuning.exe) in the Toad installation directory. This may happen if you have installed Toad using a silent installation method, or if you have moved or deleted the file manually.
To fix this error, you have two options:
Go to the Toad installation directory and look for the Tuning Labs folder. Inside this folder, run TOADSQLTuning.exe manually. This should launch SQL Optimizer and register it with Toad. You may need to restart Toad for the changes to take effect[^1^] [^4^].
Go to the Support Portal and download the standalone installer of SQL Optimizer for Oracle. Install just Optimizer using this install file. This should install SQL Optimizer in the same directory as Toad and enable the tuning options[^4^].
After following either of these steps, you should be able to use SQL Optimizer from within Toad without any errors.
SQL Optimizer is a powerful tool that helps you improve the performance of your SQL statements by analyzing, rewriting, and testing different versions of your queries. It can also generate execution plans, use Oracle optimizer hints, and compare SQL results[^2^]. To learn more about SQL Optimizer and how to use it with Toad for Oracle, check out the following resources:
SQL performance tuning using ToadÂ for Oracle Base Explain Plan
SQL Optimizer for Oracle - Quest
Using Hints - Oracle Database SQL Tuning Guide
We hope this article has helped you resolve the error \"The SQL Tuning module is not installed on this machine\" in Toad for Oracle. If you have any questions or feedback, please let us know in the comments below.How to Use Hints in SQL Optimizer
Hints are special comments that you can add to your SQL statements to influence the behavior of the Oracle optimizer. Hints can help you override the default execution plan, specify join methods, access paths, parallelism, and other optimization features. However, hints are not always guaranteed to be honored by the optimizer, and they may have unintended consequences on the performance and correctness of your queries. Therefore, you should use hints with caution and test them thoroughly before applying them to production systems.
SQL Optimizer for Oracle makes it easy to use hints in your SQL statements. You can either manually add hints to your queries using the SQL Editor, or let SQL Optimizer generate and apply hints automatically using the Optimize SQL feature. Here are the steps to use hints in SQL Optimizer:
Open SQL Optimizer from within Toad for Oracle by clicking the SQL Optimizer button on the toolbar or selecting Database -> Optimize -> Optimize Current SQL.
In the SQL Editor tab, enter or paste your original SQL statement. You can also load a SQL statement from a file or from the database.
If you want to manually add hints to your query, use the Hint Editor button on the toolbar or press Ctrl+H. This will open a dialog box where you can select from a list of available hints and insert them into your query. You can also type hints directly in the SQL Editor using the syntax /*+ hint */.
If you want to let SQL Optimizer generate and apply hints automatically, click the Optimize SQL button on the toolbar or press F5. This will start the optimization process, where SQL Optimizer will analyze your query and create different versions of it with different hints applied. You can see the progress and results of the optimization in the Optimization tab.
In the Optimization tab, you can compare the performance and results of the original and optimized queries. You can sort the queries by various criteria, such as elapsed time, CPU time, buffer gets, disk reads, etc. You can also view the execution plans, statistics, and results of each query by clicking on the corresponding tabs at the bottom.
Once you have found an optimized query that meets your requirements, you can copy it to the clipboard, save it to a file, or send it back to Toad for Oracle for further editing or execution.
Using hints in SQL Optimizer can help you improve the performance of your SQL statements by giving you more control over the optimizer's decisions. However, you should always verify that the hints are effective and do not cause any errors or inconsistencies in your queries. For more information on how to use hints in SQL Optimizer, please refer to the following resources:
Using Hints - SQL Optimizer for Oracle User Guide
How to Use Hints in Toad for Oracle - Toad World Wiki