Oracle SQL statements are an essential part of database management. They allow users to manipulate, retrieve, and update data stored in an Oracle database. As a result, understanding how to view executed Oracle SQL statements is crucial for database administrators and developers. In this guide, we will walk you through the process of viewing and analyzing executed Oracle SQL statements.
Before we dive into the details, let's first understand what executed SQL statements are. Executed SQL statements are the commands that have been processed and run by the Oracle database. These statements can include queries, data manipulation language (DML) statements, and data definition language (DDL) statements.
Now, let's take a look at the steps to view executed Oracle SQL statements.
Step 1: Enable SQL Tracing
The first step is to enable SQL tracing, which will record all the executed SQL statements. To do this, you need to set the initialization parameter SQL_TRACE to TRUE. This can be done using the ALTER SYSTEM command or by modifying the initialization parameter file.
Step 2: Identify the Session ID
Once SQL tracing is enabled, the next step is to identify the session ID of the SQL statements you want to view. This can be done by querying the V$SESSION view. The session ID is a unique identifier for each session connected to the database.
Step 3: Start SQL Trace for the Session
Using the identified session ID, you can start SQL tracing for that specific session. This can be done by executing the DBMS_SYSTEM.SET_SQL_TRACE_IN_SESSION procedure. This procedure takes two parameters - session ID and trace level. The trace level determines the amount of detail that will be recorded in the trace file.
Step 4: Generate the Trace File
Once SQL tracing is started, the executed SQL statements will be recorded in a trace file. The location of this file can be found by querying the V$DIAG_INFO view. You can also specify the location for the trace file using the initialization parameter USER_DUMP_DEST.
Step 5: Analyze the Trace File
The final step is to analyze the trace file to view the executed SQL statements. The trace file contains a detailed log of all the SQL statements that were executed in the session. It also includes information such as the execution time, number of rows returned, and the execution plan.
There are various tools available to analyze the trace file, such as Oracle Trace File Analyzer (TFA) and Enterprise Manager. These tools provide a user-friendly interface to view and analyze the executed SQL statements.
In conclusion, viewing executed Oracle SQL statements is a simple process that involves enabling SQL tracing, identifying the session ID, starting SQL trace, generating the trace file, and analyzing it using a suitable tool. By understanding how to view executed SQL statements, you can gain valuable insights into your database performance and optimize it for better efficiency.
