High Level Upgrade Plan to 12.2.5 with a Database Migration to Linux
TASK NAME Duration
- Procure Linux Hardware 12d
- Install and configure OEL for EBS for DB 2w
- Gather custom code 1w
- Migrate Solaris database to Linux 1mo
- Develop Test Scripts 1w
- Test Linux 64 bit DB server with Solaris Apps Tier 1w
- Freeze Patching of PROD 0d
- Production Cutover to Linux Database servers 2d
- Configure Linux Upgrade DB server – Install OEL 1w
- Clone Linux DB servers to Linux Upgrade server 1w
- Configure Linux Apps Upgrade server- Install OEL 1w
- Install 12.2.0 on Linux 64 bit apps tier 1w
- Upgrade DB to 12.1.0.2 on Upgrade Server 1w
- Test 12.1.0.2 DB with Solaris Apps Tier 1w
- Upgrade PROD DB to 12.1.0.2 2d
- Clone PROD DB to Upgrade DB 1w
- Upgrade to 12.2.5 2w
- Develop and Apply Customizations to 12.2.5 3w
- Test 12.2.5 3w
- Upgrade Pass #2 to 12.2.5 2w
- Apply Customizations 1w
- Test 12.2.5 1w
- Performance Upgrade to 12.2.5 1w
- Apply Customizations 1w
- Test 12.2.5 1w
- Go Live 4d