Contents
How do I use autotrace in SQL?
In SQL*Plus you can automatically get a report on the execution path used by the SQL optimizer and the statement execution statistics….Controlling the Autotrace Report.
| Autotrace Setting | Result |
|---|---|
| SET AUTOTRACE ON STATISTICS | The AUTOTRACE report shows only the SQL statement execution statistics. |
What is CPU time and elapsed time in Oracle?
– Something else! Elapsed_time is the total time the query takes*. This includes the CPU time + waits (I/O, network, etc.). The elapsed time for a given execution should match the duration provided by SQL monitor. This is what you should pay most attention to.
How does AutoTrace work in SQL * Plus-Oracle?
In SQL*Plus you can automatically get a report on the execution path used by the SQL optimizer and the statement execution statistics. The report is generated after a successful SQL DML statement, such as SELECT, DELETE, UPDATEor INSERT. It is useful for monitoring and tuning the performance of these DML statements.
How to set AutoTrace on the autotracereport?
SET AUTOTRACE ON The AUTOTRACEreport includes both the optimizer execution path and the SQL statement execution statistics. SET AUTOTRACE TRACEONLY Like SETAUTOTRACEON, but suppresses the printing of the user’s query output, if any.
What do you need to know about AutoTrace?
What is Autotrace? Autotrace is a tool built into SQLPlus that helps a developer evaluate how expensive a piece of SQL is at execution time. It is probably the easiest method of getting information about an SQL statement. Depending on what mode it is run in, it can display:
When to use AutoTrace in a parallel query?
When you trace a statement in a parallel or distributed query, the execution plan shows the cost based optimizer estimates of the number of rows (the cardinality). In general]