When you make inserts, updates, or deletes to documents in your base table, the data manipulation language (DML) queue stores the requests for documents waiting to be indexed. When you synchronize the index with CTX_DDL.SYNC_INDEX, requests are removed from this queue.

You can query pending insert, update, and delete operations using the DR$index_name$C table.

You can query insert, update, and delete errors with the CTX_INDEX_ERRORS or CTX_USER_INDEX_ERRORS view.