The problem has been solved. The main problem is that there are too many open files to open the database, and the Linux system has restrictions on file access, so just modify the maximum value of the file
java - jboss部署app后台，出现异常导致服务器进程挂掉-PHP Chinese Network Q&A

16:15:27,085 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC00001: Failed to start service jboss.deployment.unit."fyyh_web.war".STRUCTURE: org.jboss.msc.service.StartException in service jboss.deployment.unit."fyyh_web.war".STRUCTURE: Failed to process phase STRUCTURE of deployment "fyyh_web.war"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) [rt.jar:1.6.0_45]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) [rt.jar:1.6.0_45]
    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_45]
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS018037: Failed to process WEB-INF/lib: "/home/webadmin/server/jboss/standalone/deployments/fyyh_web.war/WEB-INF/lib/commons-attributes-compiler.jar"
    at org.jboss.as.web.deployment.WarStructureDeploymentProcessor.deploy(WarStructureDeploymentProcessor.java:120)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final]
    ... 5 more
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: JBAS018037: Failed to process WEB-INF/lib: "/home/webadmin/server/jboss/standalone/deployments/fyyh_web.war/WEB-INF/lib/commons-attributes-compiler.jar"
    at org.jboss.as.web.deployment.WarStructureDeploymentProcessor.createWebInfLibResources(WarStructureDeploymentProcessor.java:175)
    at org.jboss.as.web.deployment.WarStructureDeploymentProcessor.createResourceRoots(WarStructureDeploymentProcessor.java:153)
    at org.jboss.as.web.deployment.WarStructureDeploymentProcessor.deploy(WarStructureDeploymentProcessor.java:114)
    ... 6 more
Caused by: java.io.FileNotFoundException: /home/webadmin/server/jboss/standalone/tmp/vfs/deployment2301851c23264fd7/commons-attributes-compiler.jar-a9864491688308fb/commons-attributes-compiler.jar (Too many open files)
    at java.io.FileOutputStream.open(Native Method) [rt.jar:1.6.0_45]
    at java.io.FileOutputStream.<init>(FileOutputStream.java:194) [rt.jar:1.6.0_45]
    at java.io.FileOutputStream.<init>(FileOutputStream.java:145) [rt.jar:1.6.0_45]
    at org.jboss.vfs.TempDir.createFile(TempDir.java:93)
    at org.jboss.vfs.spi.JavaZipFileSystem.<init>(JavaZipFileSystem.java:83)
    at org.jboss.vfs.VFS.mountZip(VFS.java:408)
    at org.jboss.vfs.VFS.mountZip(VFS.java:434)
    at org.jboss.as.web.deployment.WarStructureDeploymentProcessor.createWebInfLibResources(WarStructureDeploymentProcessor.java:170)
    ... 8 more






16:15:32,103 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) JBAS015004: Caught exception writing deployment marker file /home/webadmin/server/jboss/standalone/deployments/hr_admin.war.pending: java.io.FileNotFoundException: /home/webadmin/server/jboss/standalone/deployments/hr_admin.war.pending (Too many open files)
    at java.io.FileOutputStream.open(Native Method) [rt.jar:1.6.0_45]
    at java.io.FileOutputStream.<init>(FileOutputStream.java:194) [rt.jar:1.6.0_45]
    at java.io.FileOutputStream.<init>(FileOutputStream.java:145) [rt.jar:1.6.0_45]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.createMarkerFile(FileSystemDeploymentService.java:890) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService.access$2600(FileSystemDeploymentService.java:88) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService$ScannerTask.<init>(FileSystemDeploymentService.java:936) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService$ScannerTask.<init>(FileSystemDeploymentService.java:925) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService$UndeployTask.<init>(FileSystemDeploymentService.java:1126) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]
    at org.jboss.as.server.deployment.scanner.FileSystemDeploymentService$UndeployTask.<init>(FileSystemDeploymentService.java:1121) [jboss-as-deployment-scanner-7.1.1.Final.jar:7.1.1.Final]