SQL> startup ORA-27102: out of memory Linux-x86_64 Error: 28: No space left on device
$ cat /proc/sys/kernel/shmmax
26843545600
SHMALL =>Total amount of shared memory available (bytes or pages)
$ getconf PAGE_SIZE
4096
$ cat /proc/sys/kernel/shmall
2097152
$ su - root
# echo 8388608 > /proc/sys/kernel/shmall
# sysctl -p
$ cat /proc/sys/kernel/shmall
8388608
SQL> startup
.
.
.
--- NO ERROR ---
mem=$(free|grep Mem|awk '{print$2}')
totmem=$(echo "$mem*1024"|bc)
huge=$(grep Hugepagesize /proc/meminfo|awk '{print $2}')
max=$(echo "$totmem*75/100"|bc)
all=$(echo "$max/$huge"|bc)
echo "kernel.shmmax = $max"
echo "kernel.shmall = $all"
kernel.shmmax = 25213120512, kernel.shmall = 12311094
If you have Debug is on at Site level then it will Impact the performance of the Instance, here is the script which will help you to quickly check your EBS Instance if ‘Debug’ is on (all level) of the EBS.
set linesize 160 col USER_PROFILE_OPTION_NAME for a30 col CONTEXT for a30 col VALUE for a30 col NAME for a30 SELECT po.profile_option_name "NAME", po.USER_PROFILE_OPTION_NAME, decode(to_char(pov.level_id), '10001', 'SITE', '10002', 'APP', '10003', 'RESP', '10005', 'SERVER', '10006', 'ORG', '10004', 'USER', '???') "LEV", decode(to_char(pov.level_id), '10001', '', '10002', app.application_short_name, '10003', rsp.responsibility_key, '10005', svr.node_name, '10006', org.name, '10004', usr.user_name, '???') "CONTEXT", pov.profile_option_value "VALUE" FROM FND_PROFILE_OPTIONS_VL po, FND_PROFILE_OPTION_VALUES pov, fnd_user usr, fnd_application app, fnd_responsibility rsp, fnd_nodes svr, hr_operating_units org WHERE po.user_profile_option_name like '%Debug%' AND pov.profile_option_value='Y' AND pov.application_id = po.application_id AND pov.profile_option_id = po.profile_option_id AND usr.user_id (+) = pov.level_value AND rsp.application_id (+) = pov.level_value_application_id AND rsp.responsibility_id (+) = pov.level_value AND app.application_id (+) = pov.level_value AND svr.node_id (+) = pov.level_value AND org.organization_id (+) = pov.level_value;
Sample ouptut:
NAME USER_PROFILE_OPTION_NAME LEV CONTEXT VALUE
--------------------------- ---------------------------- ------ --------------------------- ---------------
AFLOG_ENABLED FND: Debug Log Enabled USER SA-USER1 Y
FND_CONC_ALLOW_DEBUG Concurrent: Allow Debugging RESP XXXX_CE_SUP_MY-MYR-GE Y
PRINT_DEBUG FA: Print Debug USER SA-USER2 Y
PO_SET_DEBUG_WORKFLOW_ON PO: Set Debug Workflow ON USER SA-USER3 Y
PA_DEBUG_MODE PA: Debug Mode USER SA-USER4 Y
SO_DEBUG OE: Debug SITE Y
MSC_JAVA_DEBUG MSC: Enable Java Debug SITE Y
7 rows selected.
Syed Ali Immam Rizvi
@aliimmam