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This article mainly explains the "set autotrace on how to view the database execution plan", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "set autotrace on how to view the database execution plan" bar!

Using set autotrace on to view the execution plan of the SQL statement outputs the execution result of the SQL statement, followed by the execution plan and statistics of the SQL statement.

If you just want to see the execution plan and statistics of the SQL statement, you can use set autotrace traceonly.

This is the result of a SQL statement executing a SQL statement using set autotrace on.

Recursive calls parses how many times the function is called by the SQL statement to access row cache

Consistent gets consistent read, which is the goal of SQL optimization (belongs to cache read)

Physical reads physical reading

How many redo logs have been generated by redo size

How many bytes are sent by the bytes sent via SQL*Net to client server

How many bytes were sent by the bytes received via SQL*Net from client client

Number of SQL*Net roundtrips to/from client client / server round trips

Sorts (memory) memory sort

Sorts (disk) disk sorting

How many rows of results are processed / produced by rows processed

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