View Logs for Data Validation

To validate an external table, use the procedures DBMS_CLOUD.VALIDATE_EXTERNAL_TABLE, DBMS_CLOUD.VALIDATE_EXTERNAL_PART_TABLE, and DBMS_CLOUD.VALIDATE_HYBRID_PART_TABLE.

After you validate your source files you can see the result of the validate operation by querying a load operations table:

• dba_load_operations: shows all validate operations.

• user_load_operations: shows the validate operations in your schema.

You can use these files to view load validation information. For example use this select operation to query user_load_operations:

SELECT table_name, owner_name, type, status, start_time, update_time, logfile_table, badfile_table
FROM user_load_operations
WHERE type = 'VALIDATE';

TABLE_NAME    OWNER_NAME  TYPE       STATUS     START_TIME     UPDATE_TIME    LOGFILE_TABLE    BADFILE_TABLE
------------- ----------  ---------- ---------- -------------- -------------  ---------------  ---------------
CHANNELS_EXT  SH          VALIDATE   COMPLETED  13-NOV-17...   13-NOV-17...   VALIDATE$21_LOG  VALIDATE$21_BAD

Using this SQL statement with the WHERE clause on the TYPE column displays all of the load operations with type VALIDATE.

The LOGFILE_TABLE column shows the name of the table you can query to look at the log of a validate operation. For example, the following query shows the log for this validate operation:

SELECT * FROM VALIDATE$21_LOG;

The column BADFILE_TABLE shows the name of the table you can query to look at the rows where there were errors during validation. For example, the following query shows the rejected records for the above validate operation:

SELECT * FROM VALIDATE$21_BAD;

Depending on the errors shown in the log and the rows shown in the BADFILE_TABLE, you can correct the error by dropping the external table using the DROP TABLE command and recreating it by specifying the correct format options in DBMS_CLOUD.CREATE_EXTERNAL_TABLE, DBMS_CLOUD.CREATE_EXTERNAL_PART_TABLE or DBMS_CLOUD.CREATE_HYBRID_PART_TABLE.

Note:

The LOGFILE_TABLE and BADFILE_TABLE tables are stored for two days for each validate operation and then removed automatically.