How do I read a trace file in SQL Developer?

How do I read a trace file in Oracle?

Using the SQL Trace Facility and TKPROF

  1. Set initialization parameters for trace file management. …
  2. Enable the SQL Trace facility for the desired session, and run the application. …
  3. Run TKPROF to translate the trace file created in Step 2 into a readable output file. …
  4. Interpret the output file created in Step 3.

How do I enable trace in SQL query?

You can enable SQL Trace for your own session with the following SQL statement: ALTER SESSION SET SQL_TRACE = TRUE; Alternately, from PL/SQL, you can make the following procedure call: DBMS_SESSION.

How do I Analyse a Tkprof trace file in Oracle?


  1. Identify SQL statements that do not use bind variables. …
  2. Identify statements that perform full table scans.
  3. Identify statements that are doing multiple disk reads or have high CPU consumption.
  4. Compare the number of parses and executions.

How do I read a trace file?

Open a trace log using Traceview

  1. Start Android Device Monitor.
  2. In the Android Device Monitor, select File > Open File.
  3. Navigate to the . trace file you want to inspect.
  4. Click Open.
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How do you check if SQL trace is enabled in Oracle?

You can use the package dbms_monitor to enable tracing.

Check for Tracing Enabled

  1. sql_trace—Shows (TRUE/FALSE) if SQL tracing has been enabled in the session.
  2. sql_trace_waits—If session tracing is enabled, you can have the trace write wait information to the trace file; very useful in diagnosing performance issues.

How do I create a trace file?

Creating a trace file is useful when troubleshooting database-related issue.

  1. Run the MS SQL Server Management Studio.
  2. Go to Tools > SQL Server Profiler.
  3. Provide a name under Trace name.
  4. Use the “Standard (default)” template.
  5. Click Save to File.
  6. Provide the path and filename for the file to be saved.

Where is User_dump_dest location?


  • On UNIX: /oracle/utrc.

What is Floor in SQL?

In SQL Server (Transact-SQL), the FLOOR function returns the largest integer value that is equal to or less than a number.

How do I enable a trace in Oracle session?

The SQL Trace facility is automatically disabled for the session when the application disconnects from Oracle. You can enable the SQL Trace facility for an instance by setting the value of the SQL_TRACE initialization parameter to TRUE in the initialization file.

Which is the default level in a trace file?

NOTE: By default, trace level is set to 5 and file name is fanout_trace.

How many fields are present in trace file?

In new trace file, only 7 columns are important that are: the event type, event time, object type, packet id, packet type, packet size, and the energy.

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Which is the default level in a trace file SQL?

The default setting for this option is 1 (ON). A value of 0 turns off the trace. The default trace enabled option is an advanced option.

What is a trace file in Oracle?

Background thread trace files are created and stored in the Automatic Diagnostic Repository (ADR) directory specified by the parameter DIAGNOSTIC_DEST in the initialization parameter file. Oracle Database creates a different trace file for each foreground and background thread.

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