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Oracle Metric Recursive Calls Per Sec

Oracle Consulting Tips by Burleson

 

The Oracle Documentation notes: "The Recursive Calls Per Sec Oracle metric data item represents the number of recursive calls, per second during the sample period.

Sometimes, to execute a SQL statement issued by a user, the Oracle Server must issue additional statements. Such statements are called recursive calls or recursive SQL statements. For example, if you insert a row into a table that does not have enough space to hold that row, the Oracle Server makes recursive calls to allocate the space dynamically if dictionary managed tablespaces are being used. Recursive calls are also generated:

  • when data dictionary information is not available in the data dictionary cache and must be retrieved from disk
  • in the firing of database triggers
  • in the execution of DDL statements
  • in the execution of SQL statements within stored procedures, functions, packages and anonymous PL/SQL blocks
  • in the enforcement of referential integrity constraints"

     
This, and many other Oracle performance metrics are discussed in my book "Oracle Tuning" by Rampant TechPress.  You can buy it directly from the publisher and save 30% at this link:

http://www.rampant-books.com/book_1002_oracle_tuning_definitive_reference_2nd_ed.htm


 

 

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