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Simple answers for database moves, checks, and fixes.

Search by symptom, task, or error code. The goal is simple: understand what happened and what to do next.

CDC Streams · critical

CDC cannot read the source binary log position

Cupcake CDC requires source binary logging and permissions to read the current binlog file and position. This error usually means binlog is disabled, the database user lacks replication privileges, or the source engine/version does not expose the expected binlog status commands.

CDC Streams · warning

Foreign key checks are disabled for this CDC stream

Some CDC streams intentionally disable target foreign key checks so child rows can apply before parent rows. This can keep replication moving, but it increases the need for compare and repair checks.

Snapshot / Sync · error

Snapshot apply failed because the target database is missing

Snapshot jobs need a resolved target database. Cupcake can get that from the replication job, the saved mapping, or the target connection default depending on the run path.

Scheduler · error

Schedule references a mapping that no longer exists

Schedules are bound to saved mappings. If a mapping is deleted, recreated, or moved, the schedule cannot run until it is rebound.

Connections · error

Source and target databases are required

Compare, Snapshot, Scheduler, and CDC workflows need both sides of the mapping to resolve to concrete database names.