Detecting and Changing the JSPM Inbox
Directory
The JSPM inbox directory contains the archives that you have downloaded to patch the system. You need to know the location of the JSPM inbox directory for maintenance reasons. By default it is <DIR_EPS_ROOT>\in.
You should consider changing the default inbox directory for the following reasons:
● The default inbox directory is SID independent. If you have several systems on the same host they share the same inbox directory. This is a reason for conflicts, so you can store the updates for different systems in different inbox directories.
● Managing the system disk space. All the update archives can reach several gigabytes. To improve the disk space allocation, you can redirect the inbox to another file system with more free space.
● The EPS inbox directory is used not only by JSPM but by other tools as well. If you want to avoid affecting other tools, you should use a separate JSPM inbox directory.
● JSPM scans its inbox recursively. If you use the default inbox directory JSPM has to scan a lot of unnecessary files. You can limit the set of files that are scanned by JSPM by redirecting the JSPM inbox directory with /jspm/inbox option.
You are logged on to the operating system as a <SID>adm user.
To change the directory from where JSPM reads the SCAs you can either change the global EPS inbox directory or set a new JSPM inbox directory.
If you want to detect the value of the DIR_EPS_ROOT parameter, on the command line, execute the following command:
sappfpar pf=<install_directory>:\usr\sap\<SID>\SYS\profile\<SID>_<application server instance name>_<host> DIR_EPS_ROOT
JSPM detects the location of the global EPS inbox directory by reading the value of the instance profile parameter DIR_EPS_ROOT. The location of the global EPS inbox directory is the in subdirectory of this location.

The current value of the inbox directory can be seen in JSPM in the Select Package Type step or in the Tool Settings dialog box..

We recommend that you do not change the value of the application server instance profile parameter DIR_EPS_ROOT unless you are advised to do so by SAP support. Otherwise, your system may stop working because many SAP NetWeaver components are using it. In addition, if you have a double-stack system, bear in mind that the ABAP Support Package Manager also uses the application server instance profile parameter DIR_EPS_ROOT.
To change the value of the DIR_EPS_ROOT parameter:
1. In the /usr/sap/<SID>/SYS/profile/<SID>_<application server instance name>_<host> file:
○ If the parameter exists, change the value of the parameter as follows:
DIR_EPS_ROOT=<New location>
○ If the parameter does not exist, add the following line:
DIR_EPS_ROOT=<Location>

We recommend that you use the following pattern for the location <any path>/EPS.
2. Add a blank line at the end of the file.
3. If you are logged on to JSPM, restart it.
Set JSPM configuration parameter /jspm/inbox to the full path to the new inbox directory.