Words and Phrases
Fuse Settings
Fuse and quota settings works just like an electric fuse which prevents excessive load or short circuits. With version 10.20, there are close to 700+ settings available.
Log in to the UCMDB JMX Console, go to UCMDB:service=Settings Services and invoke the showSettingsByCategory JMX method. This will show all the settings names, the current value of your environments and the default or factory values.
Disclaimer: Micro Focus fine-tunes these settings in every content pack and in each major release. Increasing some of the settings without any cause will have a negative impact to the CMS performance. If you get Fuse Quota Errors in the log, try to incrementally increase and fine-tune your environment.
Let us look at some log patterns in the UCMDB/UD server logs which can guide you to detect FUSE Quota Errors.
| Errors in Log | Fuse Name | Default Value |
|---|---|---|
| com.hp.ucmdb.reconciliation.datain.operation.DataInOperationException:*Data container is larger than the defined fuse |
reconciliation.internal.data.container.size.fuse |
200,000 |
| Chunk oveflow. Current chunk size: *; allowed max size: * | replication.chunk.size | 4,000 |
| Total size of map is larger than the limit * which defined in reconciliation.identification.map.fuse | reconciliation.identification.map.fuse |
2,000,000 |
| Can't add to DataContainer because his size larger than the limit | reconciliation.data.container.size.fuse | 100,000 |
| CMDB Internal Error: StoppedException - stop occurred for the request thread for request | server.sync.session.timeout | 3,600 |
| The Tql result of the view is too large to handle | model.top.attribute.values.instances.fuse | 1,000,000 |
| The Tql result of the view is too large to handle | view.fuse.maximum.elements.in.tql.result | 30,000 |
| ErrorCode * Model objects quota is exceeded | quota.name.customer.model.objects | 20,000,000 |
| Too many connected CIs | reconciliation.connected.cis.fuse | |
| Data In bulk contained too many merge operations | reconciliation.merge.operations.fuse |
- Adjust fuse settings only when you see these errors. Always analyze the logs and be cognizant on these settings.
- Always document the changes and validate the changes after every CUP upgrade.
