Checking Whether the Supplemental Log Level of the Source Database Meets Requirements

**Table 1** Checking whether the supplemental log level of the source database meets requirements
Check Item	Whether the supplemental log level of the source database meets requirements
Description	The supplemental log level of the source Oracle database does not meet requirements. The synchronization fails.
Failure Cause and Handling Suggestion	Failure cause: The supplemental logging level of the source Oracle database does not meet requirements. Handling suggestion: Perform any of the following operations in the source database: Enable all-level (database-level) supplemental logging: alter database add supplemental log data (all) columns Enable minimal-level supplemental logging: alter database add supplemental log data. Then run the following command to enable all-level (table-level) supplemental logging for each to-be-synchronized table: alter table TABLE_NAME add supplemental log data(all) columns