Help Center/ Data Replication Service/ Troubleshooting/ Solutions to Failed Check Items/ Pre-Check Timeout
Updated on 2024-11-30 GMT+08:00
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Pre-Check Timeout

In the pre-check phase, DRS checks whether the prerequisites for data migration or synchronization are met in the source and destination databases to improve the task success rate. When the check duration exceeds the timeout threshold setting on the page, the pre-check result reporting times out.

Possible Causes

  • The resources in the source or destination database are insufficient, and the query is slow.
  • There are too many objects in the database.
  • Too many objects are selected. Some pre-check items are queried by object. For example, check whether the selected table exists in the destination database and whether data exists.
  • The DRS task specifications are too low. Due to physical resource restrictions, the pre-check may time out.

Handling Suggestion

  1. Check the load of the source and destination databases. If the load is heavy, perform the pre-check for the DRS task during off-peak hours.
  2. Perform the pre-check again. If the check still times out, contact the DRS customer service by choosing Service Tickets > Create Service Ticket in the upper right corner of the management console. If the page times out, the system is still running the pre-check. After the pre-check is complete, contact the customer service to skip the pre-check items that are successful.