Uninstalling only Java stack

Question

Hi,
We have ABAP + Java stack on our PRD system.  Can we uninstall only Java stack without disturbing the ABAP stack ?
Please suggest the procedure to perform this and also the post steps to be done if any.
Windows 2003 IA64+ ECC6.0 + Oracle 10.2

Answer 1

Hi
In principle, waht the UNINSTALL does is:
1. delete the relevant data from DB
2. delete the relevant files/folders from File System.
So if you do want to remove the Java add-in instance, you can do this manually even it is NOT recommended, main steps:
1. delete the Java DB schema, should be SAPDB<SID>
2. adjust the profiles to remove all the java stack relevant settings.
3. remove the j2ee and SDM folder from file system.
Probaly you want to uninstall the Java stack as you don't need and, by uninstallig it, the abap performance might be better,
but to achieve this, you just need to set the rdisp/j2ee_start to 0, or just comment out all the parameters used by the java stack
in the instance profile, and this applies to all the platform, not matter Windows or Unix.
Here is an example of the profile parameters in <SID>_DVEBMGSXX_<hostname>
exe/j2ee = $(DIR_INSTANCE)/j2ee/os_libs/jcontrol
rdisp/j2ee_start_control = 1
rdisp/j2ee_start = 1
rdisp/j2ee_timeout = 600
rdisp/frfc_fallback = on
icm/HTTP/j2ee_0 = PREFIX=/,HOST=localhost,CONN=0-500,PORT=50000
jstartup/trimming_properties = off
jstartup/protocol = on
exe/jlaunch = $(DIR_INSTANCE)/j2ee/os_libs/jlaunch
jstartup/vm/home = /usr/java14_64
INSTANCE_PROPERTIES = $(DIR_INSTANCE)/j2ee/cluster/instance.properties
SDM_PROPERTIES = $(DIR_INSTANCE)/SDM/program/config/sdm_jstartup.properties
jstartup/instance_properties = $(INSTANCE_PROPERTIES);$(SDM_PROPERTIES)
ms/server_port_0 = PROT=HTTP, PORT=8100
Regards,
Thunder