Hi,
After migrating from Tomact 7 to Tomcat 9.0.20 (running with same Java
Version 1.8.0_25) we have a problem with our JSF2 web application on Linux
RHEL 7. After some time we get Exceptions like this:
java.io.FileNotFoundException:
/f4m/tomcat/tomcat_f4mbs/webapps/ACM/WEB-INF/acm-config.xml (Too many open
files)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileInputStream.<init>(FileInputStream.java:93)
After searching around a while, I have found out that there are many open
file descriptors to xhtml files, by executing this command (where 4025 is
the Tomcat process ID):
ls -l /proc/4025/fd
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 238 ->
/usr/java/jdk1.8.0_25/jre/lib/resources.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 239 -> pipe:[3661823]
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 24 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/websocket-api.jar
l-wx------. 1 f4mHttp f4mHttp 64 May 16 09:01 240 -> pipe:[3661823]
lrwx------. 1 f4mHttp f4mHttp 64 May 16 09:01 241 -> anon_inode:[eventpoll]
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 243 -> pipe:[3661824]
l-wx------. 1 f4mHttp f4mHttp 64 May 16 09:01 244 -> pipe:[3661824]
lrwx------. 1 f4mHttp f4mHttp 64 May 16 09:01 245 -> anon_inode:[eventpoll]
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 246 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/msgBox.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 247 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/msgBox.xhtml
lrwx------. 1 f4mHttp f4mHttp 64 May 16 09:01 248 -> socket:[3667364]
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 249 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/searchpage.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 25 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/jasper.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 250 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/searchpage.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 251 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/portal/nav/portalheader.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 252 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/portal/customizing/nav/menu.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 253 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 254 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/nav/bottomPanel.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 255 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/nav/bottomPanel.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 256 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/msgBox.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:01 257 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 258 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 259 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 26 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/ecj-4.9.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 260 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 261 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 262 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/common/barcodefunction_incl.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 263 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/portal/nav/portalfooterAll.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 264 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartner.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 266 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartner.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 267 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/portal/nav/portalheader.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 268 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/portal/customizing/nav/menu.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 27 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/catalina-ha.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 274 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartner_topnav.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 275 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/msgBox.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 276 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/msgBox.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 277 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 278 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 279 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 28 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/jsp-api.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 280 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 281 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 282 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 283 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 286 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 287 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 288 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 289 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 29 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/annotations-api.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 290 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 291 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 292 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 293 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartnerparent_incl.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 294 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 295 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 296 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 297 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 298 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartnerHierarchySimilarAddresses.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 299 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartnerchild_incl.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 3 ->
/usr/java/jdk1.8.0_25/jre/lib/rt.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 30 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/tomcat-i18n-fr.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 300 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 301 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 302 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 303 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 304 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/form/partner/crmpartnerHierarchySimilarAddresses.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 305 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 306 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 307 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 308 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 309 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 31 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/tomcat-coyote.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 310 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 311 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 312 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 313 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 314 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 315 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 316 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 317 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 318 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 319 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 08:58 32 ->
/f4m/tomcat/tomcat_f4mbscrm/lib/catalina-ant.jar
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 320 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 321 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 322 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 323 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 324 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 325 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 326 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 327 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 328 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
lr-x------. 1 f4mHttp f4mHttp 64 May 16 09:02 329 ->
/f4m/tomcat/tomcat_f4mbscrm/webapps/ACM/resources/components/calendar.xhtml
This is not the complete list - there are many more.
The number of listed files goes up and down. For me it seems that xhtml (or
one of its used components) has an open file descriptor as long as a page
is shown in Browser.
I already know how to increase the maximum number of open file descriptors,
what bothers me is that if I deploy the same application on Tomcat 7 again,
I can only see open file descriptors for JAR Files, Sockets, but NEVER for
xhtml's.
Can someone please explain why this happens?
Thanks
