实例介绍
【实例截图】
【核心代码】
Table of Contents Introduction ..................................................................................................................................................................... 4 Methodology ................................................................................................................................................................... 4 Steps to follow before problems occur ............................................................................................................................ 5 Exachk ........................................................................................................................................................................ 5 AWR Baselines .......................................................................................................................................................... 7 Static Baselines .......................................................................................................................................................... 7 Moving Baselines ....................................................................................................................................................... 9 Configuration File Copies ......................................................................................................................................... 10 Tunable Parameters Snapshots ............................................................................................................................... 10 How to configure DB parameters ............................................................................................................................. 11 I/O Resource Manager ............................................................................................................................................. 12 Enterprise Manager Exadata Resource Management ............................................................................................. 13 Setting limits ............................................................................................................................................................. 15 Database Metrics ..................................................................................................................................................... 15 Configure HugePages .............................................................................................................................................. 16 Configure consolidated environments ...................................................................................................................... 16 Initial quick checks to perform ...................................................................................................................................... 17 Component Up ......................................................................................................................................................... 17 Incident Manager ...................................................................................................................................................... 19 Alert Log ................................................................................................................................................................... 21 OS System Log ........................................................................................................................................................ 23 CPU Utilization ......................................................................................................................................................... 23 Examine TOP kswapd .............................................................................................................................................. 25 Memory Utilization .................................................................................................................................................... 26 Examine VMSTAT .................................................................................................................................................... 28 ILOM Events ............................................................................................................................................................. 28 Network Status ......................................................................................................................................................... 31 Disk Status ............................................................................................................................................................... 31 CheckHWnFWProfile ............................................................................................................................................... 32 Services .................................................................................................................................................................... 33 Database Free Buffer Waits ..................................................................................................................................... 34 Exachk ...................................................................................................................................................................... 34 Have Changes Occurred in the Environment? ............................................................................................................. 35 Use baseline data to troubleshoot issues ..................................................................................................................... 35 Compare Configuration Files .................................................................................................................................... 35 Checking changes to the kernel tunable parameters ............................................................................................... 36 3 | EXADATA HEALTH AND RESOURCE USAGE MONITORING AWR Data ................................................................................................................................................................ 36 Advanced Diagnostics .................................................................................................................................................. 38 Hardware Rule out ................................................................................................................................................... 39 Check if Compute node is CPU bound ..................................................................................................................... 40 I/O Performance ....................................................................................................................................................... 41 How to analyze Cell DB HDD I/O metrics ................................................................................................................ 49 Next Steps ................................................................................................................................................................ 54 If Cells nodes are I/O bound ..................................................................................................................................... 54 If Compute node is CPU or memory bound ............................................................................................................. 55 If Cell server is not I/O bound and Compute nodes are not CPU/memory bound .................................................... 55 Cell server Target Page ........................................................................................................................................... 55 Exadata Cell Performance View ............................................................................................................................... 56 File System Information ............................................................................................................................................ 57 Common Performance use cases ............................................................................................................................ 58 Tune TOP SQLs for DW ........................................................................................................................................... 62 Database Diagnostic Tools ........................................................................................................................................... 63 ADDM ....................................................................................................................................................................... 63 Database Top Activity Page ..................................................................................................................................... 64 AWR Reports ........................................................................................................................................................... 65 New features in Exadata Plug-in 12.1.0.6 .................................................................................................................... 69 Summary ...................................................................................................................................................................... 73 References ................................................................................................................................................................... 74 Appendices ................................................................................................................................................................... 75
标签: Oracle
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