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Oracle stored procedure debugging

In the process of developing applications, Oracle stored procedures are a technology often used. Stored procedures can easily modify and query the database. However, some errors may occur when writing stored procedures, in which case it is necessary to debug the stored procedure. This article will introduce how to use the tools provided by Oracle for stored procedure debugging.

1. Preparations before debugging stored procedures

Before you start debugging stored procedures, you need to make some preparations.

Determine the debugging environment

Oracle provides a variety of tools for us to debug stored procedures. We need to determine the debugging environment to use for corresponding installation and configuration. Generally, we choose PL/SQL Developer for debugging.

Writing Oracle stored procedures

Before debugging stored procedures, we need to first write the stored procedures that need to be debugged. Stored procedures can be written in interfaces such as SQL*Plus or using tools such as PL/SQL Developer.

Set debugging information

In the stored procedure, we need to add some debugging information to facilitate debugging. These debugging information include output variables, recorded variable values, etc. When writing stored procedures, we need to add this debugging information.

2. Use PL/SQL Developer for stored procedure debugging

PL/SQL Developer is a powerful Oracle database development tool. It provides a complete set of stored procedure debugging functions, which can help us quickly locate errors in stored procedures.

Set debugging parameters

Before debugging stored procedures in PL/SQL Developer, we need to set debugging parameters first. Click the "Debug" button in the toolbar and select the "Setup Debugging" option. In the pop-up dialog box, add the stored procedure that needs to be debugged and set the debugging parameters. Among them, the debugging parameters include:

Debug mode: debug mode, usually select "Line by line" mode.
Session: debugging connection string.
Initial Breakpoint: Initial breakpoint, usually selects the first line of code of the stored procedure.

After setting the debugging parameters, we can start debugging the stored procedure.

Start debugging

Debugging stored procedures in PL/SQL Developer is very simple. Click the "Debug" button in the toolbar and select the "Start Debugging" option to start debugging. During debugging, we can use the following functions:

Step over: execute the current line of code and jump to the next line.
Step into: Execute the current line of code and jump to the first line of code in the subroutine.
Step out of: Execute the current subroutine and jump back to the place where it was called.
Run to cursor: Execute to the line of code where the cursor is.
Break: Manually interrupt program execution.
Watch List: View the value of the variable.

Debugging result query

After debugging the stored procedure in PL/SQL Developer, we need to view the debugging results. We can select the "Debug Log" option in the "Debug" menu to view the debugging results in the pop-up dialog box. Among them, you can view the value of each variable, execution time and other information.

3. Conclusion

Stored procedures are a very important technology in Oracle database. By using PL/SQL Developer to debug stored procedures, you can quickly locate errors in stored procedures and improve development efficiency. I hope this article can help you better understand stored procedure debugging techniques.

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