Oracle Database 11g: Self-Managing Database - The Next Generation

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2 <Insert Picture Here> Oracle Database 11g: Self-Managing Database - The Next Generation Katharina Römer Principal Sales Consultant

3 Agenda Introduction Manage Performance & Resources Manage Fault <Insert Picture Here>

4 Agenda Introduction Manage Performance & Resources Manage Fault <Insert Picture Here>

5 Storage Backup Memory Apps/SQL Schema RAC Recovery Replication Management Automation Auto-tuning Advisory Instrumentation

6 Self-Managing Database: The Next Generation Manage change Manage performance & resources Manage fault

7 Agenda Introduction Manage Performance & Resources Manage Fault <Insert Picture Here>

8 Oracle Database 11g: Manage Performance & Resources Automatic SQL Tuning ADDM new Features Automatic Memory Management

9 Manage Performance & Resources: Automatic SQL Tuning <Insert Picture Here>

10 Oracle Database 10g: SQL Tuning Workload 1 2 Automatic High load SQL Tuning Advisor Generate SQL profiles 4 Accept profiles ADDM 3 DBA Run SQL Tuning Advisor

11 Oracle Database 11g: Automatic SQL Tuning AWR Top SQL 2 Workload Auto matic 3 1 SQL Tuning Reports 4 DBA

12 Selecting Potential SQL Statements for Tuning AWR Weekly Daily Hourly Avrg execution Candidate list 1. Pull the top queries from the past week into four buckets: Top for the past week Top for any day in the past week Top in any single hour Top by average single execution 2. Combine four buckets into one (assigning weights) 3. Cap at 150 queries per bucket

13 Maintenance Window Timeline Automatic SQL Tuning task Pick candidate SQL Tune S1 Test P1 Accept P1 Tune S2 One hour maximum (by default) Maintenance window

14 Automatic Tuning Process Not considered for auto implementation Restructure SQL New SQL profile Considered for auto implementation Indexes Existing profile? N 3X benefit? Y Accept profile N Y Stale stats 3X benefit? Y N Ignore new profile Replace profile GATHER_STATS_JOB

15 Automatic SQL Tuning Task

16 Configuring Automatic SQL Tuning

17 Automatic SQL Tuning Result Summary

18 Automatic SQL Tuning: Result Details

19 Automatic SQL Tuning Result Details: Drilldown

20 SQL Access Advisor: Overview What partitions, indexes, and MVs do I need to optimize my entire workload? Solution SQL Access Advisor DBA Workload No expertise required Provides implementation script Component of CBO

21 SQL Access Advisor: Usage Model SQL Access Advisor SQL cache Hypothetical Workload STS Filter Options Indexes Materialized views Materialized views log Partitioned objects

22 Manage Performance & Resources: ADDM new Features <Insert Picture Here>

23 AWR Snapshots in RAC 9:00 a.m. In-memory statistics SGA (Inst1) In-memory statistics MMON Coordinator SYSAUX AWR tables MMON 6:00 a.m. 7:00 a.m. 8:00 a.m. 9:00 a.m. SGA (Instn)

24 Automatic Database Diagnostic Monitor for RAC Database ADDM Self-diagnostic engine Instance ADDM AWR Inst1 Instn

25 Automatic Database Diagnostic Monitor for RAC Identifies the most critical performance problems for the entire RAC cluster database Runs automatically when taking AWR snapshots Performs database-wide analysis of: Global resources (for example I/O and global locks) High-load SQL and hot blocks Global cache interconnect traffic Network latency issues Skew in instance response times Is used by DBAs to analyze cluster performance Eliminates need to investigate n reports to spot common problems

26 EM Support for ADDM for RAC

27 Manage Performance & Resources: Automatic Memory Management <Insert Picture Here>

28 PGA memory SGA memory Automatic Memory Management: Overview Untunable PGA Free SQL areas Buffer cache Large pool Shared pool Java pool Streams pool 10g&11g PGA target SGA target Untunable PGA Free SQL areas Buffer cache Large pool Shared pool Java pool Streams pool Memory target PGA target SGA target 11g Untunable PGA SQL areas Buffer cache Large pool Shared pool Java pool Streams pool Other SGA OLTP BATCH Other SGA Other SGA BATCH

29 Automatic Memory Management: Overview Memory max target 11g 350 MB Memory max target Memory target 11g 350 MB 300 MB Memory target 250 MB ALTER SYSTEM SET MEMORY_TARGET=300M;

30 Oracle Database 11g Memory Parameters SGA_MAX_SIZE MEMORY_MAX_TARGET MEMORY_TARGET SGA_TARGET PGA_AGGREGATE_TARGET SHARED_POOL_SIZE DB_CACHE_SIZE LARGE_POOL_SIZE JAVA_POOL_SIZE STREAMS_POOL_SIZE Others DB_KEEP_CACHE_SIZE DB_RECYCLE_CACHE_SIZE DB_nK_CACHE_SIZE LOG_BUFFER RESULT_CACHE_SIZE

31 Enabling Automatic Memory Management

32 Monitoring Automatic Memory Management

33 DBCA & Automatic Memory Management

34 Manage Performance & Resources: Summary Set up and modify Automatic SQL Tuning View and interpret reports generated by Automatic SQL Tuning Use the new features of ADDM Use Automatic Memory Management

35 Agenda Introduction Manage Performance & Resources Manage Fault <Insert Picture Here>

36 Oracle Database 11g: Manage Fault Automatic Diagnostic Repository Support Workbench Data Recovery Advisor

37 Oracle Database 11g R1 Fault Management Goal: Reduce Time to Resolution Change assurance and automatic health checks Automatic Diagnostic Workflow Intelligent resolution Proactive patching Diagnostic Solution Delivery Prevention Resolution

38 Ease Diagnosis: Automatic Diagnostic Workflow Critical Error Automatic Diagnostic Repository DBA Auto incident creation First failure capture 1 2 Alert DBA Targeted health checks Assisted SR filling DBA No Known bug? Yes 4 EM Support Workbench: Package incident info Data Repair EM Support Workbench: Apply patch/data repair 3 DBA

39 Manage Fault: Automatic Diagnostic Repository <Insert Picture Here>

40 Automatic Diagnostic Repository DIAGNOSTIC_DEST Support Workbench $ORACLE_BASE $ORACLE_HOME/log BACKGROUND_DUMP_DEST CORE_DUMP_DEST USER_DUMP_DEST ADR Base diag rdbms ADR Home DB Name SID metadata alert cdump incpkg incident hm trace (others) ADRCI log.xml incdir_1 incdir_n alert_sid.log V$DIAG_INFO

41 V$DIAG_INFO SQL> SELECT * FROM V$DIAG_INFO; NAME VALUE Diag Enabled TRUE ADR Base /u01/app/oracle ADR Home /u01/app/oracle/diag/rdbms/oc11/oc11 Diag Trace /u01/app/oracle/diag/rdbms/oc11/oc11/trace Diag Alert /u01/app/oracle/diag/rdbms/oc11/oc11/alert Diag Incident /u01/app/oracle/diag/rdbms/oc11/oc11/incident Diag Cdump /u01/app/oracle/diag/rdbms/oc11/oc11/cdump Health Monitor /u01/app/oracle/diag/rdbms/oc11/oc11/hm Default Trace File /u01/app/oracle/diag/rdbms/oc11/oc11/trace/oc11_ora_11424.trc Active Problem Count 3 Active Incident Count 8

42 Viewing the Alert Log Using Enterprise Manager

43 Problems & Incidents Problem ID Critical Error Problem DBA Flood control Automatically Manually Problem Key Incident Incident ID Incident Status Collecting Ready Tracking Data-Purged Closed Automatic transition Traces MMON ADR Auto-purge Non-critical Error Package to be sent to Oracle Support

44 Incident Packaging Service (IPS) Uses rules to correlate all relevant dumps and traces from ADR for a given problem and allow you to package them to ship to Oracle Support Rules can involve files that were generated around the same time, and associated with the same client, same error codes, and so on DBAs can explicitly add/edit or remove files before packaging Access IPS through either EM or ADRCI

45 Incident Packages ORA600HAH_ _COM_1.zip An incident package is a logical structure inside ADR representing one or more problems A package is a zip file containing dump information related to an incident package By default, only the first and last three incidents of each problem are included to an incident package You can generate complete or incremental zip files ADR Home metadata alert cdump incpkg incident hm trace (others) pkg_1 ADR Base diag rdbms DB Name SID pkg_n

46 Manage Fault: Support Workbench <Insert Picture Here>

47 EM Support Workbench Roadmap 1 View critical error alerts in Enterprise Manager 7 Close incidents 2 View problem details 6 Track the SR and implement repairs 3 Gather additional diagnostic information Package and upload diagnostic data to Oracle Support 5 4 Create a service request

48 Oracle Configuration Manager

49 View Critical Error Alerts in Enterprise Manager

50 View Problem Details

51 View Incident Details

52 View Incident Details

53 Create a Service Request

54 Package & Upload Diagnostic Data to Oracle Support

55 Track the SR and Implement Repairs

56 Track the SR and Implement Repairs

57 Close Incidents and Problems

58 Incident Packaging Configuration

59 Custom Packaging: Create New Package

60 Custom Packaging: Manipulate Incident Package

61 Custom Packaging: Finalize Incident Package

62 Custom Packaging: Generate Package

63 Custom Packaging: Upload Package

64 Viewing & Modifying Incident Packages

65 Creating User-Reported Problems

66 Running Health Checks Manually: EM Example

67 Manage Fault: Data Recovery Advisor <Insert Picture Here>

68 Data Recovery Advisor Reducing down time by eliminating confusion: 1. Assess data failures Health Monitor 2. List failures by severity 3. Advise on repair Data Recovery Advisor 4. Choose and execute repair 5. Perform proactive checks DBA

69 Assessing Data Failures 1 Database Instance Health 2 error link 3 Problem Details

70 Data Failures

71 Data Failure: Examples Not accessible components, for example: Missing data files at the OS level Incorrect access permissions Offline tablespace, and so on Physical corruptions, such as block checksum failures or invalid block header field values Logical corruptions, such as inconsistent dictionary, corrupt row piece, corrupt index entry, or corrupt transaction Inconsistencies, such as control file is older or newer than the data files and online redo logs I/O failures, such as a limit on the number of open files exceeded, channels inaccessible, network or I/O error

72 Listing Data Failures

73 Advising on Repair 1 2a (1) After manual repair (2) Automatic repair 2b

74 Executing Repairs In less than 19 second

75 Manage Fault: Summary Set up Automatic Diagnostic Repository Use the Support Workbench Run health checks

76 Storage Backup Memory Apps/SQL Schema RAC Recovery Replication Management Automation Auto-tuning Advisory Instrumentation

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