Want to batch import JSON documents into Oracle CLOB column?
Try Withdata DBBlobEditor, a Oracle CLOB editor, Bulk import JSON into Oracle, 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.
Batch import JSON documents to Oracle CLOB column
Run DBBlobEditor, login to Oracle.
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 Oracle CLOB.
then you can see importing results
More about Oracle CLOB importer
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JSON → Oracle reference
Type mapping
| Value kind | in JSON | in Oracle |
|---|---|---|
| Int | 1234 (number) | NUMBER(10) |
| Bigint | 9007199254740993 | NUMBER(19) |
| Decimal | 1234.56 (number) | NUMBER(p,s) |
| Float | 1.234e10 (number) | BINARY_DOUBLE |
| Text | "text" (string) | VARCHAR2(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) | NUMBER(1) |
| JSON | nested object or array, kept as structure | CLOB |
Dialect differences
JSON is a file format and Oracle 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 Oracle |
|---|---|---|
| port | — | 1521 |
| identifiers | Double quotes; backslash escapes | "double quotes" |
| row limit | — | FETCH FIRST n ROWS ONLY |
| dates | No date type: dates arrive as strings and the reader must p... | DATE, TIMESTAMP |
| long text | — | CLOB, NCLOB |
| binary | Not supported natively - base64 inside a string | BLOB, BFILE |
| 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 |
|---|---|
| Oracle | exp / expdp |
| Oracle (load) | sqlldr (SQL*Loader) |
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