ORA-03113: end-of-file on communication channel

[pipo]

it is highly possible that this comes from kernel parameters not being weel adjusted. try these values :

set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=200
set shmsys:shminfo_shmseg=50
set semsys:seminfo_semmni=100
set semsys:seminfo_semmsl=700
set semsys:seminfo_semmns=1200
set semsys:seminfo_semopm=100
set semsys:seminfo_semvmx=32767