Oracle Database 11 g - Online Public Access Catalog

62 CHAPTER 2 ■ DATABASE DIAGNOSABILITY AND FAILURE REPAIRFor example, if you set the diagnostic_dest parameter to /u05/app/oracle, the ADR homefor an Oracle database with an identical SID and database name of prod1, would be as follows:/u05/app/oracle/diag/rdbms/prod1/prod1/In the previous example, product_type is rdbms since you’re dealing with a database. Ineach ADR home directory, you’ll find subdirectories where Oracle stores diagnostic data forthat instance. The following are the important subdirectories in the ADR home directory:• alert: Contains the alert log for the instance (in XML format)• cdump: Contains the core files• hm: Contains Health Monitor reports• incident: Contains subdirectories for each incident, containing all trace dumps foran incident• incpkg: Contains the incident packages you create for uploading to Oracle Support• ir: Contains the incident reports for the instance• trace: Stores user session trace filesYou can query the V$DIAG_INFO view to find out where all the ADR-related locations are:SQL> select name, value from v$diag_info;NAMEVALUE------------------- ---------------------------Diag EnabledTRUEADR Base/u01/app/oracleADR Home/01/app/oracle/diag/rdbms/prod/prod1Diag Trace/u01/app/oracle/diag/rdbms/prod/prod1/traceDiag Alert/u01/app/oracle/diag/rdbms/ prod/prod1/alertDiag Incident/u01/app/oracle/diag/rdbms/prod/prod1/incidentDiag Cdump/u01/app/oracle/diag/rdbms/ prod/prod1/cdumpHealth Monitor/u01/app/oracle/diag/rdbms/ prod/prod1/hmDefault Trace File /u01/app/oracle/diag/rdbms/ prod/prod1/trace/eleven_ora_9417.trcActive Problem Count 3Active Incident Count 8SQL>As you can see, the V$DIAG_INFO view also shows the number of active problems andincidents in the database.Now that you have learned about the basic structure of the new fault diagnosability infrastructure,you can turn your attention to investigating and resolving problems by using thisdiagnostic framework.