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Copy file name to clipboardExpand all lines: articles/data-factory/change-data-capture-troubleshoot.md
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# Troubleshoot the Change data capture resource in Azure Data Factory
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[!INCLUDE[appliesto-adf-asa-md]]
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This article provides suggestions to troubleshoot common problems with the Change data capture resource in Azure Data Factory.
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This article provides suggestions on how to troubleshoot common problems with the change data capture resource in Azure Data Factory.
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## Issue: Trouble enabling native CDC in my SQL source.
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For sources in SQL, 2 sets of tables are available: tables with native SQL CDC enabled and tables with time based incremental columns.
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For sources in SQL, two sets of tables are available: tables with native SQL CDC enabled and tables with time based incremental columns.
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Follow these steps to configure native CDC for a specific source table in your SQL database:
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Follow these steps to configure native CDC for a specific source table in your SQL database.
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Consider you have following table, with ID as the Primary Key. If a Primary Key is present in the schema, supports_net_changes is set to true by default, otherwise you will need to use Query 3 to configure it.
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Consider you have following table, with ID as the Primary Key. If a Primary Key is present in the schema, supports_net_changes is set to true by default. If not, configure it using the script in Query 3.
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**Query 1**
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```sql
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## Issue: Tables are unavailable to select in the CDC resource configuration process.
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If your SQL source doesn't have SQL Server CDC with net_changed enabled or doesn't have any time-based incremental columns, then tables will be unavailable for source selection.
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If your SQL source doesn't have SQL Server CDC with net_changed enabled or doesn't have any time-based incremental columns, then the tables in your source will be unavailable for selection.
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## Issue: The debug cluster is not available from a warm pool.
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The debug cluster will not be available from a warm pool. There will be a wait time in the the order of 1+ minutes.
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The debug cluster is not available from a warm pool. There will be a wait time in the order of 1+ minutes.
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## Issue: CDC resource with both source and target linke services using custom integration runtimes won't work.
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## Issue: My CDC resource has both source and target linked services that use custom integration runtimes and it won't work.
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In VNet factories, CDC resources will work fine if either the source or target linked service is tied to an auto-resolve IR. If both the source and target linked services use custom IRs, the CDC resource will not work.
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In factories with virtual networks, CDC resources will work fine if either the source or target linked service is tied to an auto-resolve integration runtime. If both the source and target linked services use custom integration runtimess, the CDC resource will not work.
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In non-VNet factories, CDC resources requiring VNet will not work. This fix is in progress.
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In non-virtual network factories, CDC resources requiring a virtual network will not work. This fix is in progress.
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## Issue: Creating a new linked services pointing to an AKV linked service causes an error.
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## Issue: Creating a new linked services pointing to an Azure Key Vault linked service causes an error.
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If you create a new linked service using the CDC fly-out process that points to an AKV linked service, the CDC resource will break. This fix is in progress.
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If you create a new linked service using the CDC fly-out process that points to an Azure Key Vault linked service, the CDC resource will break. This fix is in progress.
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## Next steps
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-[Learn more about the change data capture resource](concepts-change-data-capture-resource.md)
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