Want to batch import JSON documents into DB2 CLOB column?
Try Withdata DBBlobEditor, a DB2 CLOB editor, Bulk import JSON into DB2, 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 DBBlobEditor
Windows 64 bit
Windows 32 bit
Linux .deb (For Debian, Ubuntu) 64 bit
Linux .rpm (For Red Hat, Fedora, SUSE) 64 bit
MacOS 64 bit
Batch import JSON documents to DB2 CLOB column
Run DBBlobEditor, login to DB2.
Click “Start New Task – Import LOB From Files” at task dialog.
then show the wizard.
1. Configure import JSON settings.
2. Bulk import JSON files to DB2 CLOB.
then you can see importing results
More about DB2 CLOB importer
Download Withdata DBBlobEditor
Windows 64 bit
Windows 32 bit
Linux .deb (For Debian, Ubuntu) 64 bit
Linux .rpm (For Red Hat, Fedora, SUSE) 64 bit
MacOS 64 bit
JSON → DB2 reference
Type mapping
| Value kind | in JSON | in DB2 |
|---|---|---|
| Int | 1234 (number) | INTEGER |
| Bigint | 9007199254740993 | BIGINT |
| Decimal | 1234.56 (number) | DECIMAL(p,s) |
| Float | 1.234e10 (number) | DOUBLE |
| Text | "text" (string) | VARCHAR(n) |
| Long text | "multi-line\ntext" (escaped newline inside a string) | CLOB |
| Date | "2026-09-18" (string) | DATE |
| Datetime | "2026-09-18T14:30:00Z" (string) | TIMESTAMP |
| Binary | "base64:..." (string) | BLOB |
| Boolean | true / false (boolean) | SMALLINT |
| JSON | nested object or array, kept as structure | CLOB |
Dialect differences
JSON is a file format and DB2 is a database server, so the target has to be told the types the file never carried - the rows below are where the two sides diverge.
| Property | in JSON | in DB2 |
|---|---|---|
| port | — | 50000 |
| identifiers | Double quotes; backslash escapes | "double quotes" |
| row limit | — | FETCH FIRST n ROWS |
| dates | No date type: dates arrive as strings and the reader must p... | DATE, TIME, TIMESTAMP |
| long text | — | CLOB |
| binary | Not supported natively - base64 inside a string | BLOB |
| separator | Braces and commas | — |
| encoding | UTF-8 by definition | — |
| typing | string, number, boolean, null, object, array - no date type | — |
| shape | Nested objects and arrays | Tables of rows and columns |
| 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 |
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.