ASM_11gR1_BestPractices_v34
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Oracle Database 11g Release 1 and 10g Release 2
Automatic Storage Management
Overview and Technical Best Practices
10/22/09
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Table of Contents
Introduction
........................................................................................................................ 3
Overview of Oracle Database 10g Release 2 ASM New Features
.................................................. 4
Overview of Oracle Database 11gR1 ASM New Features
............................................................ 4
Scalability and Performance
................................................................................................... 4
ASM installation
.......................................................................................................... 6
ASM SGA and parameter sizing
............................................................................................. 7
ASM and privileges
...................................................................................................... 8
ASMLIB
............................................................................................................................ 9
Disks
............................................................................................................................... 10
ASM and Multipathing
............................................................................................... 11
DiskGroups
...................................................................................................................... 12
Diskgroups and databases
............................................................................................ 14
ASM redundancy and Failure Groups
.................................................................................... 15
New Space related columns in Oracle Database 10g Release 2
............................................ 16
Database Instances
............................................................................................................. 18
Database consolidation and clustering
............................................................................ 18
11gR1 ASM and Rolling Upgrade
................................................................................. 19
ASM – Database Multi-Version Support
........................................................................ 20
Database processes to support ASM
.............................................................................. 20
Database Init.ora parameters to support ASM
.................................................................. 21
ASM and database shutdown dependencies
..................................................................... 21
ASM and database deployment Best Practices
................................................................. 22
Storage Management and Allocation
...................................................................................... 22
Rebalance and Redistribution
............................................................................................... 23
Files and Aliases
................................................................................................................ 25
Enhanced management for ASM
........................................................................................... 27
ASM Command Line Interface (ASMCMD)
................................................................... 27
DBMS_FILE_TRANSFER Utility Enhancements
............................................................ 29
XML ASM Virtual Folder
........................................................................................... 29
ASM Virtual Folder access via FTP
........................................................................... 30
Templates
......................................................................................................................... 30
Simplified ASM migration using EM
..................................................................................... 30
ASM Management
............................................................................................................. 31
Conclusion
....................................................................................................................... 33
Appendix A. Views and Discover Strings
............................................................................... 34
Appendix B. Migrating individual non-ASM datafiles to ASM
................................................... 35
Appendix C. Creating extra controlfiles in ASM
...................................................................... 36
Appendix D. ASM SQL scripts
............................................................................................. 37
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