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

vi /etc/security/limits.conf Add:

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

SEMMSL = 250 (or max processes per instance) SEMMNS = 32000 (or higher) SEMOPM = 100 SEMMNI = 256 (or 1024 for large systems) Set persistently: vi /etc/security/limits

# 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 : vi /etc/security/limits

echo 65536 > /proc/sys/kernel/pid_max # temporary echo "kernel.pid_max=65536" >> /etc/sysctl.conf Check for zombie processes:

ls -l $ORACLE_HOME/bin/oracle # Should have setuid (rwsr-s--x) chmod 6751 $ORACLE_HOME/bin/oracle Increase (Linux):