sap system diretories

SAP System Directories on UNIX

Here you can find information about the directory structure of an SAP system.An SAP system contains the following types of directories:

Physically shared directories, which reside on the global host and are shared by Network File System (NFS)Logically shared directories, which reside on the local host with symbolic links to the global hostLocal directories, which reside on the local host

The figures below assume that you have set up one file system for the SAP system mount directory /<sapmnt> and onefile system for the /usr/sap directory.

Standard SAP Directories for an ABAP System (Unicode or Non-Unicode)An ABAP system can be Unicode or non-Unicode.

Standard SAP Directories for a Dual-Stack (ABAP+Java) SystemAn dual-stack system can be Unicode or non-Unicode. That is, the ABAP system can be Unicode or non-Unicode,whereas the Java system can only be Unicode.

Standard SAP Directories for a Dual-Stack (ABAP+Java) System (ABAP Unicode):

SAP System Directories on UNIX - SAP Documentation http://help.sap.com/saphelp_nw70ehp1/helpdata/en/27/44f17a26a74a8ab...

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Standard SAP Directories for a Dual-Stack (ABAP+Java) System (ABAP non-Unicode):


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Standard SAP Directories for a Java System (Unicode)A Java system can only be a Unicode system.


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SAP System Directories in Detail

Directory Description

/<sapmnt>/<SAPSID> Software and data for one SAP systemThis directory and its subdirectories need to be physically shared using Network FileSystem (NFS) and mounted for all hosts belonging to the same SAP system. It contains thefollowing subdirectories:

exe

This directory contains executable kernel programs. In an SAP system with distributedinstances, this directory must be shared for all hosts with the same operating system.

NOTEABAP (Non-Unicode) + Java system onlyexe contains a folder uc with a platform-specific subfolder: <sapmnt>/<SAPSID>/exe/uc/<platform>

global

This directory contains log files. In an SAP system with distributed instances, thisdirectory must be shared for all hosts with the same operating system.profile

This directory contains the start and operations profiles of all instances. In an SAPsystem with distributed instances, this directory must be shared for all hosts with thesame operating system.


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/usr/sap/<SAPSID> Instance-specific data, symbolic links to the data for one systemThis directory contains files for the operation of a local instance.

There is a subdirectory for each instance. Each instance directory has the name of therelated instance.

The instance name (instance ID) of the ABAP central instance isDVEBMGS<Instance_Number>, and the instance name of an ABAP dialoginstance is D<Instance_Number>. In a high-availability system, there is also anABAP central services instance called ASCS<Instance_Number>

EXAMPLEThe file system structure might look as follows:On a central instance with SAP system ID C11 and instance nameDVEBMGS00, the ABAP dialog instance has the instance name D01.

The instance name (instance ID) of the ABAP+Java central instance isDVEBMGS<Instance_Number>, the instance name of the Java central servicesinstance is SCS<Instance_Number>, and the instance name of an ABAP+Javadialog instance is D<Instance_Number>. In a high-availability system, there isalso an ABAP central services instance called ASCS<Instance_Number>

EXAMPLEThe file system structure might look as follows:On a central instance with SAP system ID C11 and instance nameDVEBMGS00, the J2EE Engine is installed in /usr/sap

/C11/DVEBMGS00/j2ee, and the corresponding Software DeliveryManager (SDM) is installed in /usr/sap/C11/JC00/SDM

On a dialog instance with instance name D01, the J2EE Engine isinstalled in/usr/sap/C11/D01/j2ee. No SDM is installed.

NOTEThe subfolder SDM is only available for the central instance.

The instance name (instance ID) of the Java central instance isJC<Instance_Number>, the instance name of a Java dialog instance isJ<Instance_Number>, and the instance name of the Java central servicesinstance is SCS<No>.The instance name (instance ID) of the central instance isJC<Instance_Number>, the instance name of a Java dialog instance isJ<Instance_Number>, and the instance name of the Java central servicesinstance is SCS<Instance_Number>.

EXAMPLEThe file system structure might look as follows:On a central instance with SAP system ID C11 and instance nameJC00, the J2EE Engine is installed in /usr/sap/C11/JC00

/j2ee, and the corresponding SDM is installed in /usr/sap

/C11/JC00/SDM.On a dialog instance with instance name J01, the J2EE Engine isinstalled in /usr/sap/C11/J01/j2ee. No SDM is installed.

The directory /usr/sap/<SAPSID>/SYS contains soft links to appropriate directoriesin /<sapmnt>/<SAPSID>/ for storing data used by several instances.SYS is logically shared and available on each host of the SAP system. Its


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subdirectories contain symbolic links to the corresponding subdirectories of/<sapmnt>/<SAPSID> on the SAP global host, as shown in the figures above.

Whenever a local instance is started, the sapcpe program checks the executables againstthose in the logically shared directories and, if necessary, replicates them to the localinstance.For more information about sapcpe, see Program sapcpe.Executables located in/usr/sap/<SAPSID>/SYS/exe/run are replicated by sapcpe tothe exe subdirectory of the instance directories.

/usr/sap/trans Global transport directory for all SAP systemsThe global transport directory is used by the Change and Transport System (CTS). TheCTS helps you to organize development projects in the ABAP Workbench and inCustomizing, and then transport the changes between the SAP systems in your systemlandscape. For more information, see Change and Transport System.


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