Want to migrate from DB2 to PostgreSQL ?
Try Withdata DBCopier, a DB2 to PostgreSQL converter for Windows, Mac, and Linux, Migrate DB2 to PostgreSQL, Easy and Fast.
- Step by Step, just a few mouse clicks.
- Create PostgreSQL tables with auto mapping data types. Create PostgreSQL indexes.
Migrate from DB2 to PostgreSQL
Login to DB2 -> Login to PostgreSQL -> Select tables to migrate -> Migrate from DB2 to PostgreSQL
Choose source DB2 database and logon.
Choose target PostgreSQL database and logon.
Click “Wizard – Import All Tables” at task dialog.
then show the wizard.
1. Open source DB2.
2. Set “Import Type”.
3. Select PostgreSQL tables to migrate.
4. Migrate from DB2 to PostgreSQL.
Create PostgreSQL tables. Copy DB2 data to PostgreSQL. Create PostgreSQL indexes.
FAQ
More about DB2 to PostgreSQL converter
Download Withdata DBCopier
See also:
DB2 → PostgreSQL reference
Type mapping
| Value kind | in DB2 | in PostgreSQL |
|---|---|---|
| Int | INTEGER | integer |
| Bigint | BIGINT | bigint |
| Decimal | DECIMAL(p,s) | numeric(p,s) |
| Float | DOUBLE | double precision |
| Text | VARCHAR(n) | varchar(n) |
| Long text | CLOB | text |
| Date | DATE | date |
| Datetime | TIMESTAMP | timestamp |
| Binary | BLOB | bytea |
| Boolean | SMALLINT | boolean |
| JSON | CLOB | jsonb |
Dialect differences
Both DB2 and PostgreSQL are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in DB2 | in PostgreSQL |
|---|---|---|
| port | 50000 | 5432 |
| row limit | FETCH FIRST n ROWS | LIMIT n |
| dates | DATE, TIME, TIMESTAMP | timestamp, timestamptz, date, time |
| long text | CLOB | TEXT |
| binary | BLOB | BYTEA |
Command line
| Side | Command |
|---|---|
| DB2 | EXPORT TO out.csv OF DEL |
| PostgreSQL | pg_dump or COPY ... TO |
| PostgreSQL (load) | COPY ... FROM |
| DB2 (load) | db2 IMPORT FROM file OF DEL |
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