Rather than upgrade legacy servers (OpenAM 9.0, OpenSSO and Sun Access Manager servers), you instead migrate from your existing deployment to a new deployment.
For complex legacy deployments, ForgeRock can assist you in the migration process. Send mail to info@forgerock.com for more information.
Procedure 3.1. To Upgrade A Legacy Deployment
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Prepare your customized OpenAM server .war file.
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Prepare a new deployment, installing servers from the new, customized .war file as described in the Installation Guide, starting with the instructions in Installing OpenAM Core Services.
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After installation, configure the new servers in the same way as the old servers, adapting as necessary.
You can use the ssoadm do-batch command to apply multiple changes with one command.
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Validate that the new service is performing as expected.
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Redirect client application traffic from the old deployment to the new deployment.