Want to batch copy data from Oracle tables to PostgreSQL ?
Try Withdata DBCopier, a Oracle to PostgreSQL converter for Windows, Mac, and Linux, Bulk copy Oracle to PostgreSQL, Easy and Fast.
- Can run in GUI mode, Step by Step, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Support Windows, Linux, and macOS.
Batch copy data from Oracle tables to PostgreSQL tables
Login to Oracle and PostgreSQL -> Select source Oracle tables -> Set target PostgreSQL tables -> Copy Oracle data to PostgreSQL
Choose source Oracle database and logon.
Choose target PostgreSQL database and logon.
Click “Convert All Tables” at task dialog.
then show the wizard.
1. Select source Oracle tables.
2. List target PostgreSQL tables.
3. Select PostgreSQL tables to import.
4. Transfer data from Oracle tables to PostgreSQL.
More about Oracle to PostgreSQL converter
Download Withdata DBCopier
See also:
- Copy Oracle table data to PostgreSQL
- Copy Oracle query results to PostgreSQL table
- Merge multiple similar Oracle tables to 1 PostgreSQL table
Oracle → PostgreSQL reference
Type mapping
| Value kind | in Oracle | in PostgreSQL |
|---|---|---|
| Int | NUMBER(10) | integer |
| Bigint | NUMBER(19) | bigint |
| Decimal | NUMBER(p,s) | numeric(p,s) |
| Float | BINARY_DOUBLE | double precision |
| Text | VARCHAR2(n) | varchar(n) |
| Long text | CLOB | text |
| Date | DATE | date |
| Datetime | TIMESTAMP | timestamp |
| Binary | BLOB | bytea |
| Boolean | NUMBER(1) | boolean |
| JSON | CLOB | jsonb |
Dialect differences
Both Oracle and PostgreSQL are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in Oracle | in PostgreSQL |
|---|---|---|
| port | 1521 | 5432 |
| row limit | FETCH FIRST n ROWS ONLY | LIMIT n |
| dates | DATE, TIMESTAMP | timestamp, timestamptz, date, time |
| long text | CLOB, NCLOB | TEXT |
| binary | BLOB, BFILE | BYTEA |
Command line
| Side | Command |
|---|---|
| Oracle | exp / expdp |
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
| Oracle (load) | sqlldr (SQL*Loader) |
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