httpd processes are too many created from Apache 2.2.31 on Linux Server.

[갈준영 <jygal@xxxxxxxx>]

Hello.

I'm using Apache 2.2.31 on Linux Server.

I've faced an issue that Memory Utilization is over 80% on Linux Server.

When I checked /var/log/messages on Linux Server, I found out that httpd processes were too many created on Linux server.

Jan  6 18:39:00 <server name> kernel: [621588.393289] Out of memory: Kill process 4577 (httpd) score 16 or sacrifice child

Jan  6 18:39:00 <server name> kernel: [621588.402442] Killed process 4577 (httpd) total-vm:709776kB, anon-rss:124196kB, file-rss:0kB

When I checked Apache error logs, I found out below errors from Apache error logs at the same timeframes.

[Sat Jan 06 18:29:17 2018] [error] [client IP] PHP Warning:  ocilogon(): OCIEnvNlsCreate() failed. There is something wrong with your system - please check that LD_LIBRARY_PATH includes the directory with Oracle Instant Client libraries in <PHP File Path> on line 42, referer: <Site URL>

[Sat Jan 06 18:29:17 2018] [error] [client IP] PHP Warning:  ocilogon(): Error while trying to retrieve text for error ORA-01804\n in <PHP File Path> on line 42, referer: <Site URL>

[Sat Jan 06 18:29:17 2018] [error] [client IP] PHP Warning:  ocilogon(): OCIEnvNlsCreate() failed. There is something wrong with your system - please check that LD_LIBRARY_PATH includes the directory with Oracle Instant Client libraries in <PHP File Path> on line 42, referer: <Site URL>

[Sat Jan 06 18:29:17 2018] [error] [client IP] PHP Warning:  ocilogon(): Error while trying to retrieve text for error ORA-01804\n in <PHP File Path> on line 42, referer: <Site URL>

[Sat Jan 06 18:29:17 2018] [error] [client IP] PHP Warning:  ociparse() expects parameter 1 to be resource, boolean given in <PHP File Path> on line 103, referer: <Site URL>

Are these errors related to be created too many httpd processes on Linux Server?

Can please give me any advice for this?

Here is Apache information.

Server version: Apache/2.2.31 (Unix)

Server built:   Jul 19 2016 00:11:31

Server's Module Magic Number: 20051115:40

Server loaded:  APR 1.5.1, APR-Util 1.4.1

Compiled using: APR 1.5.1, APR-Util 1.4.1

Architecture:   64-bit

Server MPM:     Prefork

  threaded:     no

    forked:     yes (variable process count)

Server compiled with....

 -D APACHE_MPM_DIR="server/mpm/prefork"

 -D APR_HAS_SENDFILE

 -D APR_HAS_MMAP

 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)

 -D APR_USE_SYSVSEM_SERIALIZE

 -D APR_USE_PTHREAD_SERIALIZE

 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT

 -D APR_HAS_OTHER_CHILD

 -D AP_HAVE_RELIABLE_PIPED_LOGS

 -D DYNAMIC_MODULE_LIMIT=128

 -D HTTPD_ROOT="/etc/httpd"

 -D SUEXEC_BIN="/usr/sbin/suexec"

 -D DEFAULT_PIDLOG="run/httpd.pid"

 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"

 -D DEFAULT_LOCKFILE="logs/accept.lock"

 -D DEFAULT_ERRORLOG="logs/error_log"

 -D AP_TYPES_CONFIG_FILE="conf/mime.types"

 -D SERVER_CONFIG_FILE="conf/httpd.conf"

Thank you in advance.

Thanks,

Junyoung