Want to batch export Oracle CLOB to TXT (Text) files ?
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Batch extract TXT files from Oracle CLOB column
Run DBBlobEditor, login to Oracle.
Click “Start New Task – Export LOB To Files” at task dialog.
then show the wizard.
1. Configure export settings.
2. Bulk export Oracle CLOB to TXT (Text) files.
then you can see exporting results
More about Oracle CLOB exporter
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Oracle → TXT reference
Type mapping
| Value kind | in Oracle | in TXT |
|---|---|---|
| Int | NUMBER(10) | 1234, or right-aligned in a fixed-width column |
| Bigint | NUMBER(19) | 9007199254740993 |
| Decimal | NUMBER(p,s) | 1234.56 |
| Float | BINARY_DOUBLE | 1.234e+10 |
| Text | VARCHAR2(n) | written as-is; padding depends on the chosen layout |
| Long text | CLOB | written as-is |
| Date | DATE | whatever the writer chose |
| Datetime | TIMESTAMP | whatever the writer chose |
| Binary | BLOB | not representable |
| Boolean | NUMBER(1) | Y / N, or 1 / 0, or TRUE / FALSE |
Dialect differences
Oracle is a database server and TXT 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 Oracle | in TXT |
|---|---|---|
| port | 1521 | — |
| identifiers | "double quotes" | None by convention |
| row limit | FETCH FIRST n ROWS ONLY | — |
| dates | DATE, TIMESTAMP | Whatever the writer produced; no convention is guaranteed |
| long text | CLOB, NCLOB | — |
| binary | BLOB, BFILE | Not supported |
| separator | — | Whatever was chosen - often fixed column widths |
| encoding | — | No declaration - UTF-8 works only with a BOM |
| typing | — | None - every field is text |
| shape | Tables of rows and columns | Free form; a parser has to be told the layout |
| ceiling | — | No formal limit |
Command line
| Side | Command |
|---|---|
| Oracle | exp / expdp |
| Oracle (load) | sqlldr (SQL*Loader) |
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