SAP OS Directory Structure

• UNIX based: use /
• Windows based: use <drive>:\ 

• /usr/sap  - 
Physical parent directory

• /usr/sap/trans  - 
Transport directory

• /usr/sap/SID  - 
SAP system parent directory

• /usr/sap/SID/SYS  - 
Contain common and global SAP system files (i.e. profile, global and exe directory)

• /usr/sap/SID/[instance_name]  - 
Contain SAP instance specific directories (i.e. data, log, and work)

• /sapmnt  - 
Directory structure for sharing common files to all system belonging into the same group.

• /sapmnt/SID  - 
Link or share folder of directory /usr/sap/[SID]/SYS

• /oracle  - 
Directory of the whole database system (for Oracle DB)

• /oracle/stage  - 
Directory that used for database installation and upgrades

•/oracle/SID  - 
Directory of the whole database application and data files

• /sapmnt/SID/profile  - 
SAP instance profile

• /sapmnt/SID/global  - 
SAP central system log

• /sapmnt/SID/exe  - 
SAP executable application directory

• /sapmnt/SID/exe  - 
Contain all SAP run-time program

• /sapmnt/SID/exe/opt  - 
Contain optimized program

• /sapmnt/SID/exe/dbg  - 
Program can run under symbolic debuggers

• /sapmnt/SID/exe/run  - 
Actual runtime program (SAP kernel)

• /sapmnt/SID/global  - 
Contain global and common data shared by all instance (i.e. central system logs and batch job logs)

• /sapmnt/SID/profile  - 
Contain instance profile (startup, default, instance-specific)

• /usr/sap/SID/INSTANCE-NAME/data  - 
Contain virtual storage data (i.e. user context and roll area)

• /usr/sap/SID/INSTANCE-NAME/log  - 
Log entries generated by instance

• /usr/sap/SID/INSTANCE-NAME/work  - 
Holds all error message & trace information for the instance process

• /usr/sap/trans  - 
Main transport directory

• /usr/sap/trans/bin  - 
Contain TPPARAM file (global transport parameter)

• /usr/sap/trans/data  - 
Contain transport data file

• /usr/sap/trans/log  - 
Transport logs, trace and statistic file

• /usr/sap/trans/buffer  - 
Special buffer with the SID of every system in the transport group (including control information)

• /usr/sap/trans/cofiles  - 
Control file directory

• /usr/sap/trans/sapnames  - 
Contain information of SAP User that performs export and keep tracks of each transport status

• /usr/sap/trans/tmp  - 
Temporary directory

• /usr/sap/trans/actlog  - 
Action log files (managed by SAP system)

• /usr/sap/trans/olddata  - 
Archived transport files

• /usr/sap/trans/backup  - 
Directory of logical backup with R3trans program

• /usr/sap/trans/serial  - 
Contain serialization of tp