Long wait after clicking “Apply Changes” in OpsManager UI for Large vSphere Environments
Article ID: 451208
Updated On:
Products
Issue/Introduction
When clicking Apply Changes or modifying configurations in Operations Manager, you might experience significant delays, UI unresponsiveness.
Key observations include:
- The UI appears to hang for several minutes before showing progress or responding.
- High network counts (e.g., >10,000) are present in the vCenter environment.
- Logs may indicate long processing times during the pre-deploy validation phase.
Environment
VMware Tanzu Operations Manager 3.1.12, 3.3.4
Cause
The issue is caused by the NetworkExistenceVerifier performing sequential, individual API calls to vCenter for every network defined in the environment. In large-scale setups, this results in hundreds of thousands of individual calls per "Apply Changes" request, leading to severe performance degradation and web server timeouts.
Resolution
Product team has identified the root cause as inefficient network validation and has implemented batching logic for the NetworkExistenceVerifier. This change significantly reduces the number of API calls to vCenter and improves performance by up to 250x in large environments.
The fix is included in the future patch releases of 3.1.x,3.3.x.
Additional Information
Workaround:
If an immediate resolution is required before the patch can be applied, above verifier can be disabled as per below doc.
Note: This will skip network existence validation during configuration saves and deployments. Ensure all network configurations are accurate before proceeding. Please contact support before deactivating.
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