Oracle Appliactions 11i concepts(九) - High Avaliablility(1)

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1. Instroduction
- Patching Hints and Tips
- Maintenance Mode
- Shared APPL_TOP and Shared Application Tier File System
- Staged APPL_TOP
- NOLOGGING in the Applications Database
- Distributed AD
- Disaster Recovery best practices

2. Patching Hints and Tips
以下幾中方法，可以使DOWNTIME 最到最少：
- Schedule periodic downtime for application of the latest maintenance packs or family packs
- Keep AD up-to-date
- Keep your test system current with your production system
- Consolidate multiple patches with AD Merge patch
- Use a shared APPL_TOP and shared application tier file system
- Use a staged APPL_TOP
- Use the Distributed AD feature
- Perform maintenance during normal operation where possible