Want to batch export DB2 CLOB to JSON files ?
Try Withdata DBBlobEditor, a DB2 CLOB editor, Bulk export DB2 CLOB to JSON files, East and Fast.
- Can run in GUI mode, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Support Windows, Linux, and macOS.
Download Withdata DBBlobEditor 
Batch extract JSON files from DB2 CLOB column
Run DBBlobEditor, login to DB2.
Click “Start New Task – Export LOB To Files” at task dialog.
then show the wizard.
1. Configure export settings.
2. Bulk export DB2 CLOB to JSON files.
then you can see exporting results
More about DB2 CLOB exporter
Download Withdata DBBlobEditor
DB2 → JSON reference
Type mapping
| Value kind | in DB2 | in JSON |
|---|---|---|
| Int | INTEGER | 1234 (number) |
| Bigint | BIGINT | 9007199254740993 |
| Decimal | DECIMAL(p,s) | 1234.56 (number) |
| Float | DOUBLE | 1.234e10 (number) |
| Text | VARCHAR(n) | "text" (string) |
| Long text | CLOB | "multi-line\ntext" (escaped newline inside a string) |
| Date | DATE | "2026-09-18" (string) |
| Datetime | TIMESTAMP | "2026-09-18T14:30:00Z" (string) |
| Binary | BLOB | "base64:..." (string) |
| Boolean | SMALLINT | true / false (boolean) |
| JSON | CLOB | nested object or array, kept as structure |
Dialect differences
DB2 is a database server and JSON is a file format, so the gap is wider than a dialect difference – the rows below are where values and structure stop lining up.
| Property | in DB2 | in JSON |
|---|---|---|
| port | 50000 | — |
| identifiers | "double quotes" | Double quotes; backslash escapes |
| row limit | FETCH FIRST n ROWS | — |
| dates | DATE, TIME, TIMESTAMP | No date type: dates arrive as strings and the reader must p... |
| long text | CLOB | — |
| binary | BLOB | Not supported natively - base64 inside a string |
| separator | — | Braces and commas |
| encoding | — | UTF-8 by definition |
| typing | — | string, number, boolean, null, object, array - no date type |
| shape | Tables of rows and columns | Nested objects and arrays |
| ceiling | — | Whole document is usually parsed into memory |
Command line
| Side | Command |
|---|---|
| DB2 | EXPORT TO out.csv OF DEL |
| DB2 (load) | db2 IMPORT FROM file OF DEL |
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