Ora-27103 Internal Error Svr4 Error 11 Resource Temporarily Unavailable Apr 2026

ipcs -s | grep oracle | awk 'print $2' | xargs -n1 ipcrm -s Linux :

vi /etc/security/limits.conf Add:

# shmmax = 80% of RAM, shmall = shmmax / 4096 (page size) echo "kernel.shmmax = 68719476736" >> /etc/sysctl.conf # 64GB echo "kernel.shmall = 16777216" >> /etc/sysctl.conf sysctl -p : ipcs -s | grep oracle | awk 'print

set semsys:seminfo_semmns=4096 set semsys:seminfo_semmni=1024 set semsys:seminfo_semmsl=512 (if instance is down):

# Current limits cat /proc/sys/kernel/shmmax cat /proc/sys/kernel/shmall Set for large SGA: ipcs -s | grep oracle | awk 'print

set maxuprc=16384 , then verify:

ls -l $ORACLE_HOME/bin/oracle # Should have setuid (rwsr-s--x) chmod 6751 $ORACLE_HOME/bin/oracle Increase (Linux): ipcs -s | grep oracle | awk 'print

# Current semaphore limits (SEMMSL, SEMMNS, SEMOPM, SEMMNI) ipcs -ls | grep "max number of arrays" cat /proc/sys/kernel/sem Recommended for Oracle:

oracle soft nproc 16384 oracle hard nproc 32768 oracle soft nofile 65536 oracle hard nofile 65536 in /etc/system :