java.io.IOException: Too many open files

[root@f ~]# cat /mnt/gateway/java/nohup.out -n | tail -30

1060236 at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method) ~[na:1.8.0_144]
1060237 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422) ~[na:1.8.0_144]
1060238 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250) ~[na:1.8.0_144]
1060239 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:448) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060240 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:70) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060241 at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:95) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060242 at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]
1060243
1060244 2018-12-15 11:39:18.837 ERROR 24094 --- [8080-Acceptor-0] org.apache.tomcat.util.net.Acceptor : Socket accept failed
1060245
1060246 java.io.IOException: Too many open files
1060247 at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method) ~[na:1.8.0_144]
1060248 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422) ~[na:1.8.0_144]
1060249 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250) ~[na:1.8.0_144]
1060250 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:448) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060251 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:70) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060252 at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:95) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060253 at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]
1060254
1060255 2018-12-15 11:39:19.038 ERROR 24094 --- [8080-Acceptor-0] org.apache.tomcat.util.net.Acceptor : Socket accept failed
1060256
1060257 java.io.IOException: Too many open files
1060258 at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method) ~[na:1.8.0_144]
1060259 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422) ~[na:1.8.0_144]
1060260 at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250) ~[na:1.8.0_144]
1060261 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:448) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060262 at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:70) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060263 at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:95) ~[tomcat-embed-core-9.0.13.jar!/:9.0.13]
1060264 at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]