How to validate blob object in oracle?

@jerad 

To validate a BLOB object in Oracle, you can use the DBMS_LOB package to perform various checks and operations on the BLOB. Here are some steps you can follow to validate a BLOB object:

1. Verify the existence of the BLOB object by querying the table that contains the BLOB column. You can use a SELECT statement to retrieve the BLOB data and check if it returns any valid data.
2. Check the size of the BLOB object using the DBMS_LOB.GETLENGTH function. This function returns the length of the BLOB object in bytes, allowing you to verify if the BLOB contains the expected amount of data.
3. Validate the content of the BLOB object by checking for specific patterns or metadata within the BLOB data. You can use functions such as DBMS_LOB.SUBSTR to extract a portion of the BLOB data and inspect its contents.
4. Compare the BLOB data with a known reference or checksum to ensure its integrity. You can calculate a checksum value using DBMS_CRYPTO package functions and compare it with the checksum value of the BLOB data.

By following these steps and using the DBMS_LOB package functions, you can effectively validate BLOB objects in Oracle and ensure their integrity and correctness.