Directory

When installing the database, the installation program creates a series of directories. The programs and libraries of the database system are stored in two different root directories:

The first root directory is the Independent Program Path. There is always only one Independent Program Path on each computer, on which the database software of one or more versions is installed. This path is defined in the first installation of the database software.

The second root directory is the Dependent Path. This directory is only created on the database computer when a database is created. The programs and libraries of the database core are stored in this directory. A database computer can contain any number of Dependent Path root directories of the same or different software versions. Thus every database can be operated with its own database core.

Important Directories in the Database System
Path	Contents of Directory
`<independent_program_path>`	Programs and libraries jointly used by all databases and applications These always have the latest installed version of the database software.
`<independent_program_path>\runtime`	Runtime environment of the clients, such as `JDBC`, `Precompiler`
`<dependent_path>`	Installation directory of the database software Storage location of the version-dependent server software Any number of directories can exist together on one computer for the same version or for different versions. All programs in these version-dependent directories are not executed directly by the user, but are called using the programs stored in the `<independent_program_path>`.
`<independent_data_path>`	Data, configuration, and run directories of databases and applications
`<independent_data_path>\config`	Configuration files for database parameters, data for user authorization, and so on
`<independent_data_path>\wrk\<database_name>`	Run Directory of the database `<database_name>`
`<independent_data_path>\wrk\<database_name>\DIAGHISTORY`	Diagnosis files (backups of the most important log files and memory dumps) which are saved by the database system after a database error You can configure the path of this directory with the special database parameter `DiagnoseHistoryPath`.
`<tool_application_data>`	Includes log and configuration files of the database tool `<tool>`
`<tool_user_data>`	Contains the data generated with the database tool `<tool>` by the logged-on operating system user

During the installation of the database software, the system provides default values for the root directories, which you can adapt to your requirements. The default values provided vary because the system considers the conditions of the installation environment when creating the default values. Those conditions depend on whether SAP MaxDB software installations already exist and which paths they were stored under, whether the software is being installed within an SAP system or for a stand-alone system, and so on.

Therefore, the actual directory structures presented in the documentation are only for orientation purposes.

In the following you find overviews of the paths created during the installation under Microsoft Windows and UNIX/Linux

within SAP systems
when installing a stand-alone system

Directory Structure Within SAP Systems

Case 1: Software installation with creation of a database (server and client installation)

In SAP systems, a separate SAP MaxDB software package is installed for each database which is only used by that database. This means, for example, that for two databases of version 7.6, the SAP MaxDB software of version 7.6 is installed twice.

The complete software installation on the database computer comprises the following paths:

An Independent Program Path
A Dependent Path
An Independent Data Path
A run directory of the database
A path for log volume storage
A path for data volume storage

Default Values for the Directory Structure
Path	Default Value on Microsoft Windows	Default Value on UNIX/Linux
`Independent Program Path`	`<drive>:\sapdb\programs` `--bin` `--pgm` `--...` `--...`	`/sapdb/programs`
`Dependent Path`	`<drive>:\sapdb\<database_name>\db`	`/sapdb/<database_name>/db`
`Independent Data Path`	`<drive>:\sapdb\data`	`/sapdb/data`
Run directory of the database instance	`<drive>:\sapdb\data\wrk\<database_name>`	`/var/opt/sdb/data/wrk/<database_name>`
Storage of log volumes	`<drive>:\sapdb\<database_name>\saplog`	`/var/opt/sdb/data/<database_name>/log`
Storage of data volumes	`<drive>:\sapdb\<database_name>\sapdata`	`/var/opt/sdb/data/<<database_name>/data`

To ensure the downward compatibility of the database software, the database system also creates the following directories on UNIX/Linux:

Path	Contents of Directory
`/var/spool/sql`	Links to current directories and files
`/usr/spool/sql`	Links to current directories and files

Case 2: Software installation as application server (client installation)

In a pure client installation, the following paths are created:

An Independent Program Path
An Independent Data Path

Default values for the directory structure
Path	Default Value on Microsoft Windows	Default Value on UNIX/Linux
`Independent Program Path`	`<drive>:\sapdb\programs` `--bin` `--pgm` `--...` `--...`	`/sapdb/programs`
`Independent Data Path`	`<drive>:\sapdb\data`	`/sapdb/data`

To ensure the downward compatibility of the database software, the database system also creates the following directories on UNIX/Linux:

Path	Contents of Directory
`/var/spool/sql`	Links to current directories and files
`/usr/spool/sql`	Links to current directories and files

Directory Structure within Stand-Alone Systems

Case 1: First installation of the database software with creation of a database

An Independent Program Path
A Dependent Path
An Independent Data Path
A run directory of the database
A path for log volume storage
A path for data volume storage

Path	Default Value on Microsoft Windows	Default Value on UNIX/Linux
`Independent Program Path`	`<drive>:\Program Files\sdb\programs`	`/opt/sdb/programs`
`Dependent Path`	`<drive>:\Program Files\sdb\<database_name>`	`/opt/sdb/<database_name>/db`
`Independent Data Path`	`<drive>:\Documents and Settings\All Users\Application Data\sdb\data`	`/var/opt/sdb/data`
Run directory of the database instance	`<drive>:\Documents and Settings\All Users\Application Data\sdb\data\wrk\<database_name>`	`/var/opt/sdb/data/wrk\<database_name>`
Path for log volume storage	`<drive>:\Documents and Settings\All Users\Application Data\sdb\<database_name>\log`	`/var/opt/sdb/data/<database_name>/log`
Path for data volume storage	`<drive>:\Documents and Settings\All Users\Application Data\sdb\<database_name>\data`	`/var/opt/sdb/data/<database_name>/data`

To ensure the downward compatibility of the database software, the database system also creates the following directories on UNIX/Linux:

Path	Contents of Directory
`/var/spool/sql`	Links to current directories and files
`/usr/spool/sql`	Links to current directories and files

Case 2: Creating additional databases that use this server software

The Independent Program Path and Independent Data Path have already been defined during the installation of the server software used.

When additional databases are being created, there is created one Dependent Path for each database. In addition, below the existing Independent Data Path, the path for the working directory, the path for log volume storage and the path for data volume storage are created for each database.

In a summary, the following new paths are created for each database:

A run directory of the database
A path for log volume storage
A path for data volume storage

Path	Default Value on Microsoft Windows	Default Value on UNIX/Linux
Run directory of the database instance	`<drive>:\Documents and Settings\All Users\Application Data\sdb\data\wrk\<database_name>`	`/var/opt/sdb/data/wrk/<database_name>`
Path for log volume storage	`<drive>:\Documents and Settings\All Users\Application Data\sdb\<database_name>\log`	`/var/opt/sdb/data/<database_name>/log`
Path for data volume storage	`<drive>:\Documents and Settings\All Users\Application Data\sdb\<database_name>\data`	`/var/opt/sdb/data/<database_name>/data`

Example Example

The databases DEMODB, TESTDB and MAXDB are all created with the same existing server software. The following path structure results under the Independent Data Path:

<drive>:\Documents and Settings

-All Users

-Application Data

-sdb

-data

-wrk

-DEMODB

-TESTDB

-MAXDB

-DEMODB

-log

-data

-TESTDB

-log

-data

-MAXDB

-log

-data

End of the example.

Case 3: First installation of the database software with the aim of creating the first database later on

An Independent Program Path
A Dependent Path
An Independent Data Path

Path	Default Value on Microsoft Windows	Default Value on UNIX/Linux
`Independent Program Path`	`<drive>:\Program Files\sdb\programs`	`/opt/sdb/programs`
`Dependent Path`	`<drive>:\Program Files\sdb\<version>`	`/opt/sdb/<version>`
`Independent Data Path`	`<drive>:\Documents and Settings\All Users\Application Data\sdb\data`	`/var/opt/sdb/data`

To ensure the downward compatibility of the database software, the database system also creates the following directories on UNIX/Linux:

Path	Contents of Directory
`/var/spool/sql`	Links to current directories and files
`/usr/spool/sql`	Links to current directories and files

More Information

Database Administration in CCMS, Properties