SocketException : 너무 많은 열린 파일

Question

jboss7.0.2에서 내 응용 프로그램을 실행 중입니다. 얼마 후 VM이 "FileNotFoundException : 너무 많은 열린 파일"오류를 던지기 시작했습니다. 이 직후에 예외가 "SocketException : 너무 많은 열린 파일"로 변경되고 모든 소켓 연결이 거부되기 시작했습니다.

내가 사용하여 파일을 나열

,

lsof -p (PID of java) 

java 2981 jboss cwd DIR 202,1  4096 286892 /opt/jboss7/bin 
java 2981 jboss mem REG 202,1 3101294 303234 /opt/jboss7/modules/com/sun/xml/bind/main/jaxb-xjc-2.2.jar 
java 2981 jboss mem REG 202,1  872839 303232 /opt/jboss7/modules/com/sun/xml/bind/main/jaxb-impl-2.2.jar 
java 2981 jboss mem REG 202,1  543044 303191 /opt/jboss7/modules/org/joda/time/main/joda-time-1.6.2.jar 
java 2981 jboss mem REG 202,1  7662 337202 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/slf4j-simple-1.6.4.jar-5e712b1d3aa271f5/slf4j-simple-1.6.4.jar 
java 2981 jboss mem REG 202,1  20639 337199 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/log4j-over-slf4j-1.6.4.jar-da4eaca58ac78436/log4j-over-slf4j-1.6.4.jar 
java 2981 jboss mem REG 202,1  31284 337194 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/jcommander-1.12.jar-c61b19af70c8bf25/jcommander-1.12.jar 
java 2981 jboss mem REG 202,1  666665 337191 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/guice-2.0.jar-29aff9bdf30d9ec6/guice-2.0.jar 
java 2981 jboss mem REG 202,1  121070 337188 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/junit-3.8.1.jar-e882fc70a94f89bb/junit-3.8.1.jar 
java 2981 jboss mem REG 202,1  659413 337185 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/trove-1.1-beta-5.jar-71bab73f2a1e98c9/trove-1.1-beta-5.jar 
java 2981 jboss mem REG 202,1  608376 337182 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/c3p0-0.9.1.jar-7d5529e5d213dc5/c3p0-0.9.1.jar 
java 2981 jboss mem REG 202,1  539705 337179 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/postgresql-9.0-801.jdbc4.jar-984beb99091b7785/postgresql-9.0-801.jdbc4.jar 
java 2981 jboss mem REG 202,1  26361 337176 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/asm-1.5.3.jar-54fb77fde523b0a9/asm-1.5.3.jar 
java 2981 jboss mem REG 202,1 2309955 337173 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/hibernate-core-3.3.2.GA.jar-b8a8129c26f4cd51/hibernate-core-3.3.2.GA.jar 
java 2981 jboss mem REG 202,1  15347 337170 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/opencsv-2.0.jar-888b8a58480bd822/opencsv-2.0.jar 
java 2981 jboss mem REG 202,1  109318 337167 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/xml-apis-1.0.b2.jar-630532004dbb4129/xml-apis-1.0.b2.jar 
java 2981 jboss mem REG 202,1  57779 337164 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/commons-fileupload-1.2.1.jar-5294101c9a62497a/commons-fileupload-1.2.1.jar 
java 2981 jboss mem REG 202,1  282244 337161 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/cglib-2.1_2.jar-4ec9fd3801bb1495/cglib-2.1_2.jar 
java 2981 jboss mem REG 202,1  644148 337158 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/javassist-3.12.1.GA.jar-5495cc51e7d87d08/javassist-3.12.1.GA.jar 
java 2981 jboss mem REG 202,1  232121 337155 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/snakeyaml-1.6.jar-71fb94779beb43bc/snakeyaml-1.6.jar 
java 2981 jboss mem REG 202,1  25962 337152 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/slf4j-api-1.6.4.jar-87ef6bbe594711ec/slf4j-api-1.6.4.jar 
java 2981 jboss mem REG 202,1  4467 337149 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/aopalliance-1.0.jar-9912ab03a6271bc3/aopalliance-1.0.jar 
java 2981 jboss mem REG 202,1  568435 337146 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/testng-5.14.9.jar-a15bf7544fe18e09/testng-5.14.9.jar 
java 2981 jboss mem REG 202,1  443432 337143 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/antlr-2.7.6.jar-61bc20b99e33636b/antlr-2.7.6.jar 
java 2981 jboss mem REG 202,1  87776 337140 /opt/jboss7/standalone/tmp/vfs/deployment89b34d33a7ecad72/commons-io-1.3.2.jar-512e37e2249c5643/commons-io-1.3.2.jar 
java 2981 jboss 783u IPv6 54509212  0t0  TCP Cloud.ecommunicate.celebritytalktone.mobi:webcache->Cloud.ecommunicate.celebritytalktone.mobi:36810 (CLOSE_WAIT) 
java 2981 jboss 784u IPv6 54509228  0t0  TCP Cloud.ecommunicate.celebritytalktone.mobi:webcache->Cloud.ecommunicate.celebritytalktone.mobi:36812 (CLOSE_WAIT) 
java 2981 jboss 785u IPv6 54509501  0t0  TCP Cloud.ecommunicate.celebritytalktone.mobi:webcache->Cloud.ecommunicate.celebritytalktone.mobi:36818 (CLOSE_WAIT) 
java 2981 jboss 786u IPv6 54509555  0t0  TCP Cloud.ecommunicate.celebritytalktone.mobi:webcache->Cloud.ecommunicate.celebritytalktone.mobi:36821 (CLOSE_WAIT) 
java 2981 jboss 787u IPv6 54509689  0t0  TCP Cloud.ecommunicate.celebritytalktone.mobi:webcache->Cloud.ecommunicate.celebritytalktone.mobi:36825 (CLOSE_WAIT) 

Answer 1

당신은 ulimit를 더 큰 값으로, 열린 파일 핸들의 최대 수를 설정하는 리눅스 명령을 사용할 수 있습니다. 예 :

ulimit -n 60000 

Answer 2

ulimit 답변이 정확합니다.

그러나, 먼저 사용자가 이러한 제한을 증가 허용하도록 /etc/security/limits.conf 파일을 편집해야 할 수도 있습니다

# to give all users a hard limit of 60000 open files 
*   hard nofile 60000 
# to give user "jbossuser" a default limit of 60000 open files 
jbossuser -  nofile 60000 

Answer 3

그것은 열린 파일 descripted 한계의 수를 초과했습니다. 해결 방법 : 열린 파일 수에 대한 하드 및 소프트 제한을 늘립니다.

• 는 /etc/security/limits.conf 파일에서 999,999 NOFILE 999999
• 하드 소프트 NOFILE