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The Type Mapping page of the Project Settings dialog box contains settings that customize how SSMA converts Oracle data types into SQL Server data types.
The Type Mapping page is available in the Project Settings and Default Project Settings dialog boxes.
To specify settings for all future SSMA projects, on the Tools menu click Default Project Settings, select migration project type for which settings are required to be viewed or changed from Migration Target Version drop-down and then click Type Mapping at the bottom of the left pane.
To specify settings for the current project, on the Tools menu click Project Settings, and then click Type Mapping at the bottom of the left pane.
To specify settings for the current object or class of objects, use the Type Mapping tab in the primary SSMA window.
The following table shows the Type Mapping tab options:
Source Type
The mapped Oracle data type.
Target Type
The target SQL Server data type for the specified Oracle data type.
See the tables in the next section for the default SSMA for Oracle type mappings.
Add
Click to add a data type to the mapping list.
Edit
Click to edit the selected data type in the mapping list.
Remove
Click to remove the selected data type mapping from the mapping list.
Reset to Default
Click to reset the type mapping list to the SSMA defaults.
In SSMA for Oracle, you can set custom type mappings for arguments, columns, local variables, and return values. The default mapping for arguments and return types is almost identical.
The following table contains the default data type mapping for arguments and return values.
| Oracle Data Type | Default SQL Server Data Type |
|---|---|
| bfile | varbinary(max) |
| binary_double | float[53] |
| binary_float | float[53] |
| binary_integer | int |
| blob | varbinary(max) |
| boolean | bit |
| char | varchar(max) |
| char varying | varchar(max) |
| character | varchar(max) |
| character varying | varchar(max) |
| clob | varchar(max) |
| date | datetime2[0] |
| dec | dec[38][0] |
| decimal | float[53] |
| double precision | float[53] |
| float | float[53] |
| int | int |
| integer | int |
| long | varchar(max) |
| long raw | varbinary(max) |
| long raw[*..8000]* | varbinary[*] |
| long raw[8001..*]* | varbinary(max) |
| national char | nvarchar(max) |
| national char varying | nvarchar(max) |
| national character | nvarchar(max) |
| national character varying** | nvarchar(max) |
| national character varying* | nvarchar(max) |
| nchar | nvarchar(max) |
| nclob | nvarchar(max) |
| number | float[53] |
| numeric | float[53] |
| nvarchar2 | nvarchar(max) |
| pls_integer | int |
| raw | varbinary(max) |
| real | float[53] |
| rowid | uniqueidentifier |
| signtype | smallint |
| smallint | smallint |
| string | varchar(max) |
| timestamp | datetime2 |
| timestamp with local time zone | datetimeoffset |
| timestamp with time zone | datetimeoffset |
| urowid | uniqueidentifier |
| varchar | varchar(max) |
| varchar2 | varchar(max) |
| xmltype | xml |
* Applies to return value type mapping only.
** Applies to argument type mapping only.
The following table contains the default type mapping for columns.
| Oracle Data Type | Default SQL Server Data Type |
|---|---|
| bfile | varbinary(max) |
| binary_double | float[53] |
| binary_float | float[53] |
| blob | varbinary(max) |
| char | char |
| char varying[*..*] | varchar[*] |
| char[*..*] | char[*] |
| character | char |
| character varying[*..*] | varchar[*] |
| character[*..*] | char[*] |
| clob | varchar(max) |
| date | datetime2[0] |
| dec | dec[38][0] |
| dec[*..*] | dec[*][0] |
| dec[*..*][*..*] | dec[*][*] |
| decimal | decimal[38][0] |
| decimal[*..*] | decimal[*][0] |
| decimal[*..*][*..*] | decimal[*][*] |
| double precision | float[53] |
| float | float[53] |
| float[*..53] | float[*] |
| float[54..*] | float[53] |
| int | int |
| integer | int |
| long | varchar(max) |
| long raw | varbinary(max) |
| long raw[*..8000] | varbinary[*] |
| long raw[8001..*] | varbinary(max) |
| long varchar | varchar(max) |
| long[*..8000] | varchar[*] |
| long[8001..*] | varchar(max) |
| national char | nchar |
| national char varying[*..*] | nvarchar[*] |
| national char[*..*] | nchar[*] |
| national character | nchar |
| national character varying[*..*] | nvarchar[*] |
| national character[*..*] | nchar[*] |
| nchar | nchar |
| nchar[*] | nchar[*] |
| nclob | nvarchar(max) |
| number | float[53] |
| number[*..*] | numeric[*] |
| number[*..*][*..*] | numeric[*][*] |
| numeric | numeric |
| numeric[*..*] | numeric[*] |
| numeric[*..*][*..*] | numeric[*][*] |
| nvarchar2[*..*] | nvarchar[*] |
| raw[*..*] | varbinary[*] |
| real | float[53] |
| rowid | uniqueidentifier |
| smallint | smallint |
| timestamp | datetime2 |
| timestamp with local time zone | datetimeoffset |
| timestamp with local time zone[*..*] | datetimeoffset[*] |
| timestamp with time zone | datetimeoffset |
| timestamp with time zone[*..*] | datetimeoffset[*] |
| timestamp[*..*] | datetime2[*] |
| Urowid | uniqueidentifier |
| urowid[*..*] | uniqueidentifier |
| varchar[*..*] | varchar[*] |
| varchar2[*..*] | varchar[*] |
| Xmltype | xml |
The following table contains the default type mapping for local variables.
| Oracle Data Type | Default SQL Server Data Type |
|---|---|
| Bfile | varbinary(max) |
| binary_double | float[53] |
| binary_float | float[53] |
| binary_integer | int |
| Blob | varbinary(max) |
| Boolean | bit |
| Char | char |
| char varying[*..8000] | varchar[*] |
| char varying[8001..*] | varchar(max) |
| char[*..8000] | char[*] |
| char[8001..*] | varchar(max) |
| Character | char |
| character varying[*..8000] | varchar[*] |
| character varying[8001..*] | varchar(max) |
| character[*..8000] | char[*] |
| character[8001..*] | varchar(max) |
| clob | varchar(max) |
| date | datetime2[0] |
| dec | dec[38][0] |
| dec[*..*] | dec[*][0] |
| dec[*..*][*..*] | dec[*][*] |
| decimal | decimal[38][0] |
| decimal[*..*] | decimal[*][0] |
| decimal[*..*][*..*] | decimal[*][*] |
| double precision | float[53] |
| Float | float[53] |
| float[*..53] | float[*] |
| float[54..*] | float[53] |
| Int | int |
| Integer | int |
| integer[*..*] | numeric[*][0] |
| Long | varchar(max) |
| long raw | varbinary(max) |
| long raw[*..8000] | varbinary[*] |
| long raw[8001..*] | varbinary(max) |
| national char | nchar |
| national char varying[*..4000] | nvarchar[*] |
| national char varying[4001..*] | nvarchar(max) |
| national char[*..4000] | nchar[*] |
| national char[4001..*] | nvarchar(max) |
| national character | nchar |
| national character[*..4000] | nvarchar[*] |
| national character[4001..*] | nvarchar(max) |
| national character varying [*..4000] | nvarchar[*] |
| national character varying [4001..*] | nvarchar(max) |
| Nchar | nchar |
| nchar[*..4000] | nchar[*] |
| nchar[4001..*] | nvarchar(max) |
| nchar varying [*..4000] | nvarchar[*] |
| nchar varying [4001..*] | nvarchar(max) |
| Nclob | nvarchar(max) |
| Number | float[53] |
| number[*..*] | numeric[*] |
| number[*..*][*..*] | numeric[*][*] |
| Numeric | numeric[38][0] |
| numeric[*..*] | numeric[*] |
| numeric[*..*][*..*] | numeric[*][*] |
| nvarchar2[*..4000] | nvarchar[*] |
| nvarchar2[4001..*] | nvarchar(max) |
| pls_integer | int |
| raw[*..8000] | varbinary[*] |
| raw[8001..*] | varbinary(max) |
| Real | float[53] |
| Rowid | uniqueidentifier |
| Signtype | smallint |
| Smallint | smallint |
| string[*..8000] | varchar[*] |
| string[8001..*] | varchar(max) |
| timestamp | datetime2 |
| timestamp with local time zone | datetimeoffset |
| timestamp with time zone | datetimeoffset |
| timestamp with local time zone[*..*] | datetimeoffset[*] |
| timestamp with time zone[*..*] | datetimeoffset[*] |
| timestamp[*..*] | datetime2[*] |
| Urowid | uniqueidentifier |
| urowid[*..*] | uniqueidentifier |
| varchar[*..8000] | varchar[*] |
| varchar[8001..*] | varchar(max) |
| varchar2[*..8000] | varchar[*] |
| varchar2[8001..*] | varcha(max) |
| Xmltype | xml |