Want to migrate from SQL Server to Oracle ?
Try Withdata DBCopier, a SQL Server to Oracle converter for Windows, Mac, and Linux, Migrate SQL Server to Oracle, Easy and Fast.
- Step by Step, just a few mouse clicks.
- Create Oracle tables with auto mapping data types. Create Oracle indexes.
Download Withdata DBCopier
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
Migrate from SQL Server to Oracle
Login to SQL Server -> Login to Oracle -> Select tables to migrate -> Migrate from SQL Server to Oracle
Choose source SQL Server database and logon.
Choose target Oracle database and logon.
Click “Wizard – Import All Tables” at task dialog.
then show the wizard.
1. Open source SQL Server.
2. Set “Import Type”.
3. Select Oracle tables to migrate.
4. Migrate from SQL Server to Oracle.
Create Oracle tables. Copy SQL Server data to Oracle. Create Oracle indexes.
FAQ
More about SQL Server to Oracle converter
Download Withdata DBCopier
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
See also:
SQL Server → Oracle reference
Type mapping
| Value kind | in SQL Server | in Oracle |
|---|---|---|
| Int | int | NUMBER(10) |
| Bigint | bigint | NUMBER(19) |
| Decimal | decimal(p,s) | NUMBER(p,s) |
| Float | float | BINARY_DOUBLE |
| Text | nvarchar(n) | VARCHAR2(n) |
| Long text | nvarchar(max) | CLOB |
| Date | date | DATE |
| Datetime | datetime2 | TIMESTAMP |
| Binary | varbinary(max) | BLOB |
| Boolean | bit | NUMBER(1) |
Dialect differences
Both SQL Server and Oracle are database servers, so the differences below are dialect-level: the same concept is spelled differently on each side.
| Property | in SQL Server | in Oracle |
|---|---|---|
| port | 1433 | 1521 |
| identifiers | [square brackets] | "double quotes" |
| row limit | SELECT TOP n | FETCH FIRST n ROWS ONLY |
| dates | datetime, datetime2, date, time | DATE, TIMESTAMP |
| long text | nvarchar(max) | CLOB, NCLOB |
| binary | varbinary(max) | BLOB, BFILE |
Command line
| Side | Command |
|---|---|
| SQL Server | bcp |
| Oracle | exp / expdp |
| Oracle (load) | sqlldr (SQL*Loader) |
| SQL Server (load) | bcp, or BULK INSERT |
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