DB2 BLOB Type Overview
- SMALLBLOB: Up to 512 KB
- BLOB: Up to 4 GB
- LONGBLOB: Up to 16 EB (recommended for large PDF files)
Step-by-Step Implementation
Method 1: Manual SQL Statements
1. Create Table with BLOB Field
CREATE TABLE pdf_storage (
id INT PRIMARY KEY,
pdf_name VARCHAR(255),
pdf_data BLOB
);
2. Insert PDF Binary Data
INSERT INTO pdf_storage (id, pdf_name, pdf_data)
VALUES (1, 'sample.pdf', BLOB('path/to/local/sample.pdf'));
3. Retrieve PDF from BLOB Field
SELECT pdf_data FROM pdf_storage WHERE id = 1;
Method 2: Using DBBlobEditor (Optional Visual Tool)
For simplified operation, DBBlobEditor supports one-click import of PDF files to DB2 BLOB fields, auto-validates field type compatibility, and enables batch processing of multiple PDF files.
- View PDF stored in DB2 BLOB field
- Batch import PDF files into DB2 BLOB
- Batch export DB2 BLOB to PDF files
DB2 BLOB Issues & Solutions
- Indexing BLOB fields: Avoid indexing large BLOB fields to improve performance
- Large PDF storage: Use LONGBLOB and enable chunked storage