Check missing indexes

Hi all
We have a database with multiple tables using foreign keys. Some of my questions of coldfusion are slow. We use the 11g version.
It's a way to check the missing indexes?
I want to help the best results database, I know it's a broad topic but as new in oracle, I have to start somewhere.
Links or comments will be appreciated.
Concerning

Johnny

You have PROFESSIONAL secrecy? If Yes, you can ask Oracle to analyze your queries and recommend what indexes should improve performance. You need get the SQL Id for each query you want to analyze.

jbrock@orcl-local> /* get recommendations from SQL Access Advisor */
jbrock@orcl-local> VARIABLE tuning_task VARCHAR2(32) ;
jbrock@orcl-local> EXEC :tuning_task := dbms_sqltune.create_tuning_task (sql_id => '&sqlID') ;
Enter value for sqlid: 07t63t1k2xw6p

jbrock@orcl-local> EXEC dbms_sqltune.execute_tuning_task(task_name => :tuning_task) ;

jbrock@orcl-local> COLUMN recommendations FORMAT a160
jbrock@orcl-local> SELECT DBMS_SQLTUNE.report_tuning_task (:tuning_task) AS recommendations
                          FROM DUAL ;

Tags: Database

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