Issues with OSGi bundle states in AEM
In the AEM production environment, when OSGi bundles states are indicating potential issues with bundle deployment or configuration, identify bundle states, understand what each state means, and address them based on the displayed status.
Description description
Environment
ÃÛ¶¹ÊÓƵ Experience Manager (AEM) Managed Services v6.5
Issue/Symptoms
In AEM production, OSGi bundles may not always be active as expected. The following symptoms can be observed:
- Bundles appear fragmented.
- Bundles are resolved but not active.
- Bundles are active and functioning normally.
These states indicate issues with bundle deployment or configuration that need to be fixed to ensure all services work correctly.
Resolution resolution
To resolve issues related to OSGi bundle states in AEM:
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Identify bundle states:
- Check the status of each bundle in the system console to determine which ones are fragmented, resolved, or active.
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Understand bundle states:
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The OSGi framework represents bundle states differently based on their status.
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Resolved bundles: These are bundles that have been installed and have all dependencies satisfied but are not yet active. They are ready to be started.
- When bundles are in the resolved state, the system console header lists the number of bundles in each state, providing a clear overview of the bundle lifecycle. Resolved bundles are highlighted separately to indicate they are ready to be started but are not yet active. This helps in identifying bundles that might need attention or manual intervention to transition to the active state.
- A resolved bundle in OSGi means that the framework has found all the required packages and services needed by the bundle, and it is ready to be started. However, it is not yet active.
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Fragment bundles: These cannot be independently resolved or started. They attach to a host bundle to provide additional resources or code.
- Fragment bundles are used to augment the capabilities of a host bundle. They provide additional resources or code to the host bundle, enhancing its functionality.
- A fragment bundle is auxiliary and cannot function on its own. It must be associated with a host bundle to be resolved and started.
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Action steps for resolved bundles:
- Ensure all necessary configurations or dependencies are properly set up.
- Manually start these bundles if they do not automatically transition from resolved to active after meeting all conditions.
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Address fragmented bundles:
- Verify that each fragment is correctly associated with its intended host bundle.
- Confirm that the host bundle is operational and capable of integrating the additional resources provided by fragments.