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