I discovered this on a customer site this weekend. Their servers are running SLES Linux 64bit and already had Domino 9.0.1 FP2 on them. I upgraded to FP4 but only one of the clustered mail servers runs iNotes – that server kept crashing as soon as someone tried to access their mail. The other server was stable and if I disabled HTTP the crashing server stayed up.
Turns out the IBM installer for FP4 on Linux and AIX is setting the ownership of the dojo folder incorrectly which causes the crash. The dojo folder is under <notesdatadirectory>/domino/js and the ownership was set to invalid names. From the js directory (which just has the dojo folder in it) I ran
chown notes:notes * -R
which told Linux to change the ownership of the dojo folder and everything beneath to the account / group used to run Domino.
There is a technote dated 28th August that i’ll post here but the fix on the technote is incorrect. On their fix they say the permissions are wrong and need changing to 755 using chmod but that’s not true, they are already 755 in my installs but the actual ownership is wrong. Maybe they’ll fix the technote but the background is here http://www-01.ibm.com/support/docview.wss?uid=swg21964549