What scenarios to update plugin.cfg,why we need to stop node agent for synchronisation.what about 504 error and 403 error issue resolving method,Ear files Deoyment and Data source

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Updating plugin.cfg, stopping node agent for sync, resolving 504 and 403 errors, deploying EAR files, and configuring data sources are important scenarios for a Middleware Administrator.

plugin.cfg needs to be updated when adding or removing a plugin
Stopping node agent is necessary for synchronizing plugin changes
504 error can be resolved by increasing timeout value or optimizing code
403 error can be resolved by checking permissions and access control
EAR files can be deployed using deployment manager or command line tools
Data sources can be configured using administrative console or scripting

What scenarios to update plugin.cfg,why we need to stop node agent for synchronisation.what about 504 error and 403 error issue resolving method,Ear files Deoyment and Data source

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