Cursors in oracle for updating all records examples

Analyze normal data dictionary objects (not fixed dictionary objects) using the same interval that you currently use when analyzing other objects.Use gather_database_stats, gather_schema_stats, or gather_dictionary_stats to perform this action. Analyze fixed objects only once, unless the workload footprint changes.Here is an example of the use of the gather_fixed argument within the dbms_stats.gather_schema_stats procedure: .These allow you to export and import statistics to user-defined statistics tables, just as you could with normal table statistics previously.These new feature include collection of data dictionary statistics ( which is now recommended as a best practice by Oracle) , new behaviors associated with the dbms_stats package, and new features related to monitoring tables in the database.The Rule Based Optimizer (RBO) is desupported with 10g.

The other possible values are The parameter optimizer_dynamic_sampling has a new default value of 2 in Oracle Database 10g.Oracle recommends that you analyze the data dictionary.You can collect these statistics by using either the dbms_stats.gather_schema_stats or dbms_stats.gather_database_stats Oracle-supplied procedures, as shown here: procedures are NOT new in Oracle 10 g, but using them to collect data dictionary statistics is new, as there are some new parameters that are available with these procedures.If you choose to switch off the automatic statistics gathering job for your main application schema consider leaving it on for the dictionary tables.You can do this by changing the value of AUTOSTATS_TARGET to ORACLE instead of AUTO using the following: When to Collect Dictionary Statistics Oracle recommends the following strategy with regard to analyzing the data dictionary in Oracle 10g: 1.

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