Connection option descriptions
- Last Updated: July 30, 2025
- 2 minute read
- DataDirect Connectors
- ODBC
- SAP S/4HANA 8.0
- Documentation
The connection option descriptions in this section are listed alphabetically by the GUI name that appears on the driver Setup dialog box. The connection string attribute name, along with its short name, is listed immediately underneath the GUI name in the option topics.
In most cases, the GUI name and the attribute name are the same; however, some exceptions exist. If you need to look up an option by its connection string attribute name, please refer to the following tables of connection string attribute names.
Also, a few connection string attributes, for example, Password, do not have equivalent options that appear on the GUI. They are in the list of descriptions by their attribute names.
The following tables provide a summary of supported connection options by functionality, including their attribute names, short names, and default values.
General options
The following table summarizes general connection options that can apply to all connections that use data sources.
| Attribute (Short Name) | Default |
|---|---|
| DataSourceName (dsn) | No default value |
| Description (n/a) | No default value |
| Hostname (host) | No default value |
| ServiceList (slist) |
No default value |
Basic authentication options
The following table summarizes options used for basic user id and password authentication.
| Attribute (Short Name) | Default |
|---|---|
| AuthenticationMethod (am) | 0 (Basic) |
| Hostname (host) | No default value |
| Password (pwd) | No default value |
| User | No default value |
HTTP Header authentication options (S/4HANA only)
The following table summarizes the connection options required to connect to a service when using HTTP Header authentication. This authentication method is supported only for S/4HANA services.
| Attribute (Short Name) | Default |
|---|---|
| AuthenticationMethod (am) | 25 (HTTPHeader) |
| AuthHeader (ah) | No default value |
| Hostname (host) | No default value |
| SecurityToken (st) | No default value |
Mapping options
The following table summarizes connection options involved in mapping the SAP S/4HANA data model to a SQL model.
| Attribute (Short Name) | Default |
|---|---|
| CreateMap (cm) | 0 (NotExist) |
| KeywordConflictSuffix (kcs) | No default value |
| RefreshSchema (rs) | 0 (false) |
| SchemaMap (smp) |
Default value depends on environment |
SQL engine options
The following table lists the options used to configure the SQL engine.
| Attribute (Short Name) | Default |
|---|---|
| JVMArgs (jvma) | For the 32-bit driver when the SQL Engine Mode
is set to 2 (Direct): -Xmx256m For all other configurations: -Xmx1024m |
| JVMClassPath (jvmcp) | install_dir\java\lib\s4hana.jar |
| JVMPath (jvmp) | install_dir\jre\bin\java.exe |
| ServerPortNumber (spn) |
32-bit: 64-bit: |
| ServerProxyHost (sph) |
No default value |
| ServerProxyPassword (spw) | No default value |
| ServerProxyPort (spp) | No default value |
| ServerProxyUser (spu) | No default value |
| SQLEngineMode (sem) | For Windows: 0 (Auto) For Linux: The SQL engine runs in Direct mode by default. |
| SQLService (ss) | No default value |
Proxy server options
The following table summarizes proxy server connection options.
| Attribute (Short Name) | Default |
|---|---|
| ProxyHost (pxhn) | No default value |
| ProxyPassword (pxpw) |
No default value |
| ProxyPort (pxpt) |
For HTTP: For HTTPS: |
| ProxyUser (pxun) |
No default value |
Web service options
The following table summarizes Web service connection options, including those related to timeouts.
| Attribute (Short Name) | Default |
|---|---|
| StmtCallLimit (scl) | 0 (no limit) |
| StmtCallLimitBehavior (sclb) | 1
(ErrorAlways) |
| WSCompressData (wscd) |
|
| WSFetchSize (wsfs) |
|
Additional options
The following table summarizes additional connection options.
| Attribute (Short Name) | Default |
|---|---|
| ApplicationUsingThreads (aut) | 1 (True) |
| ExtendedOptions (xo) | No default value |
| FetchSize (fs) | 100 (rows) |
| InitializationString (is) | No default value |
| LogConfigFile (lgcf) | ddlogging.properties |
| MaxVarcharSize (mxvs) | 64000 |
| ReadOnly (ro) | 0 (false) |
| ReportCodepageConversionErrors (rcce) | 0 (Ignore Errors) |
| ServiceVersion (sver) | 0
(Latest) |
| TransactionMode (tm) |
|
This section includes the following topics: