阿里云 Java环境 每小时在根目录下生成 hs_err_pid*.log ，求教！

[羽羊]

OS环境：阿里云 1核 1G内存；
安装软件：安装了 JDK 1.7 TOMCAT 7.X；
部署内容：部署了 java web 工程，工程正常运行；
问题：每小时在跟目录下生成一个 hs_err_pid<pid>.log
已经采取的措施：
1、配置服务器Swap
2、配置tomcat jvm 内存 （bin/catalina.sh）

未果，求牛人指点。

文件内容如下：
#
# There is insufficient memory for the Java Runtime Environment to continue.
# pthread_getattr_np
# Possible reasons:
# The system is out of physical RAM or swap space
# In 32 bit mode, the process size limit was hit
# Possible solutions:
# Reduce memory load on the system
# Increase physical memory or swap space
# Check if swap backing store is full
# Use 64 bit Java on a 64 bit OS
# Decrease Java heap size (-Xmx/-Xms)
# Decrease number of Java threads
# Decrease Java thread stack sizes (-Xss)
# Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
# Out of Memory Error (os_linux_x86.cpp:718), pid=29229, tid=140505843455744
#
# JRE version: Java(TM) SE Runtime Environment (7.0_67-b01) (build 1.7.0_67-b01)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.65-b04 mixed mode linux-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#

--------------- T H R E A D ---------------

Current thread (0x00007fca0c08a800): JavaThread "Service Thread" daemon [_thread_new, id=29237, stack(0x0000000000000000,0x0000000000000000)]

Stack: [0x0000000000000000,0x0000000000000000], sp=0x00007fca10e34880, free space=137212737746k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x99eb8a]
V [libjvm.so+0x49721b]
V [libjvm.so+0x8237ca]
V [libjvm.so+0x823815]
V [libjvm.so+0x952614]
V [libjvm.so+0x958dd4]
V [libjvm.so+0x81f988]

[羽羊]

接主贴错误日志 --------------- P R O C E S S --------------- Java Threads: ( => current thread ) =>0x00007fca0c08a800 JavaThread "Service Thread" daemon [_thread_new, id=29237, stack(0x0000000000000000,0x0000000000000000)] 0x00007fca0c088000 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=29236, stack(0x00007fca10e36000,0x00007fca10f37000)] 0x00007fca0c085800 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=29235, stack(0x00007fca10f37000,0x00007fca11038000)] 0x00007fca0c084000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=29234, stack(0x00007fca11038000,0x00007fca11139000)] 0x00007fca0c064800 JavaThread "Finalizer" daemon [_thread_blocked, id=29233, stack(0x00007fca11139000,0x00007fca1123a000)] 0x00007fca0c062800 JavaThread "Reference Handler" daemon [_thread_blocked, id=29232, stack(0x00007fca1123a000,0x00007fca1133b000)] 0x00007fca0c008800 JavaThread "main" [_thread_in_vm, id=29230, stack(0x00007fca12195000,0x00007fca12296000)] Other Threads: 0x00007fca0c05e000 VMThread [stack: 0x00007fca1133b000,0x00007fca1143c000] [id=29231] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event]) [0x00007fca0c006bc0] PeriodicTask_lock - owner thread: 0x00007fca0c008800 Heap def new generation total 4800K, used 343K [0x00000000eb400000, 0x00000000eb930000, 0x00000000f0750000) eden space 4288K, 8% used [0x00000000eb400000, 0x00000000eb455e40, 0x00000000eb830000) from space 512K, 0% used [0x00000000eb830000, 0x00000000eb830000, 0x00000000eb8b0000) to space 512K, 0% used [0x00000000eb8b0000, 0x00000000eb8b0000, 0x00000000eb930000) tenured generation total 10624K, used 0K [0x00000000f0750000, 0x00000000f11b0000, 0x00000000fae00000) the space 10624K, 0% used [0x00000000f0750000, 0x00000000f0750000, 0x00000000f0750200, 0x00000000f11b0000) compacting perm gen total 21248K, used 2132K [0x00000000fae00000, 0x00000000fc2c0000, 0x0000000100000000) the space 21248K, 10% used [0x00000000fae00000, 0x00000000fb015148, 0x00000000fb015200, 0x00000000fc2c0000) No shared spaces configured. Card table byte_map: [0x00007fca117bd000,0x00007fca11864000] byte_map_base: 0x00007fca11063000 Polling page: 0x00007fca1332b000 Code Cache [0x00007fca09000000, 0x00007fca09270000, 0x00007fca0c000000) total_blobs=156 nmethods=0 adapters=126 free_code_cache=48779Kb largest_free_block=49950080 Compilation events (0 events): No events GC Heap History (0 events): No events

[羽羊]

接1楼错误日志 Deoptimization events (0 events): No events Internal exceptions (1 events): Event: 0.027 Thread 0x00007fca0c008800 Threw 0x00000000eb410380 at /HUDSON/workspace/7u-2-build-linux-amd64/jdk7u67/1368/hotspot/src/share/vm/prims/jni.cpp:3991 Events (10 events): Event: 0.058 loading class 0x00007fca11701880 Event: 0.058 loading class 0x00007fca11701880 done Event: 0.058 loading class 0x00007fca1170df80 Event: 0.058 loading class 0x00007fca1170df80 done Event: 0.058 loading class 0x00007fca116c8ee0 Event: 0.058 loading class 0x00007fca116c8ee0 done Event: 0.058 Thread 0x00007fca0c084000 Thread added: 0x00007fca0c084000 Event: 0.058 Thread 0x00007fca0c085800 Thread added: 0x00007fca0c085800 Event: 0.059 Thread 0x00007fca0c088000 Thread added: 0x00007fca0c088000 Event: 0.059 Thread 0x00007fca0c08a800 Thread added: 0x00007fca0c08a800 Dynamic libraries: 00400000-00401000 r-xp 00000000 ca:01 1188153 /usr/java/jdk1.7.0_67/bin/java 00600000-00601000 rw-p 00000000 ca:01 1188153 /usr/java/jdk1.7.0_67/bin/java 01869000-0188a000 rw-p 00000000 00:00 0 [heap] eb400000-eb930000 rw-p 00000000 00:00 0 eb930000-f0750000 rw-p 00000000 00:00 0 f0750000-f11b0000 rw-p 00000000 00:00 0 f11b0000-fae00000 rw-p 00000000 00:00 0 fae00000-fc2c0000 rw-p 00000000 00:00 0 fc2c0000-100000000 rw-p 00000000 00:00 0 3f40400000-3f40420000 r-xp 00000000 ca:01 271165 /lib64/ld-2.12.so 3f4061f000-3f40620000 r--p 0001f000 ca:01 271165 /lib64/ld-2.12.so 3f40620000-3f40621000 rw-p 00020000 ca:01 271165 /lib64/ld-2.12.so 3f40621000-3f40622000 rw-p 00000000 00:00 0 3f40c00000-3f40d8b000 r-xp 00000000 ca:01 271166 /lib64/libc-2.12.so 3f40d8b000-3f40f8a000 ---p 0018b000 ca:01 271166 /lib64/libc-2.12.so 3f40f8a000-3f40f8e000 r--p 0018a000 ca:01 271166 /lib64/libc-2.12.so 3f40f8e000-3f40f8f000 rw-p 0018e000 ca:01 271166 /lib64/libc-2.12.so 3f40f8f000-3f40f94000 rw-p 00000000 00:00 0 3f41000000-3f41017000 r-xp 00000000 ca:01 268700 /lib64/libpthread-2.12.so 3f41017000-3f41217000 ---p 00017000 ca:01 268700 /lib64/libpthread-2.12.so 3f41217000-3f41218000 r--p 00017000 ca:01 268700 /lib64/libpthread-2.12.so 3f41218000-3f41219000 rw-p 00018000 ca:01 268700 /lib64/libpthread-2.12.so 3f41219000-3f4121d000 rw-p 00000000 00:00 0 3f41400000-3f41402000 r-xp 00000000 ca:01 271168 /lib64/libdl-2.12.so 3f41402000-3f41602000 ---p 00002000 ca:01 271168 /lib64/libdl-2.12.so 3f41602000-3f41603000 r--p 00002000 ca:01 271168 /lib64/libdl-2.12.so 3f41603000-3f41604000 rw-p 00003000 ca:01 271168 /lib64/libdl-2.12.so 3f41800000-3f41807000 r-xp 00000000 ca:01 271173 /lib64/librt-2.12.so 3f41807000-3f41a06000 ---p 00007000 ca:01 271173 /lib64/librt-2.12.so 3f41a06000-3f41a07000 r--p 00006000 ca:01 271173 /lib64/librt-2.12.so 3f41a07000-3f41a08000 rw-p 00007000 ca:01 271173 /lib64/librt-2.12.so 3f41c00000-3f41c83000 r-xp 00000000 ca:01 271175 /lib64/libm-2.12.so 3f41c83000-3f41e82000 ---p 00083000 ca:01 271175 /lib64/libm-2.12.so 3f41e82000-3f41e83000 r--p 00082000 ca:01 271175 /lib64/libm-2.12.so 3f41e83000-3f41e84000 rw-p 00083000 ca:01 271175 /lib64/libm-2.12.so 7fc9e8000000-7fc9e8021000 rw-p 00000000 00:00 0 7fc9e8021000-7fc9ec000000 ---p 00000000 00:00 0 7fc9ec000000-7fc9ec021000 rw-p 00000000 00:00 0 7fc9ec021000-7fc9f0000000 ---p 00000000 00:00 0 7fc9f0000000-7fc9f0021000 rw-p 00000000 00:00 0 7fc9f0021000-7fc9f4000000 ---p 00000000 00:00 0 7fc9f6170000-7fc9fc000000 r--p 00000000 ca:01 1050076 /usr/lib/locale/locale-archive 7fc9fc000000-7fc9fc021000 rw-p 00000000 00:00 0 7fc9fc021000-7fca00000000 ---p 00000000 00:00 0 7fca00000000-7fca00021000 rw-p 00000000 00:00 0 7fca00021000-7fca04000000 ---p 00000000 00:00 0 7fca04000000-7fca04021000 rw-p 00000000 00:00 0 7fca04021000-7fca08000000 ---p 00000000 00:00 0 7fca09000000-7fca09270000 rwxp 00000000 00:00 0 7fca09270000-7fca0c097000 rw-p 00000000 00:00 0 7fca0c097000-7fca10000000 ---p 00000000 00:00 0 7fca10c34000-7fca10c35000 ---p 00000000 00:00 0 7fca10c35000-7fca10e36000 rw-p 00000000 00:00 0 7fca10e36000-7fca10e39000 ---p 00000000 00:00 0 7fca10e39000-7fca10f37000 rw-p 00000000 00:00 0 7fca10f37000-7fca10f3a000 ---p 00000000 00:00 0 7fca10f3a000-7fca11038000 rw-p 00000000 00:00 0 7fca11038000-7fca1103b000 ---p 00000000 00:00 0 7fca1103b000-7fca11139000 rw-p 00000000 00:00 0 7fca11139000-7fca1113c000 ---p 00000000 00:00 0 7fca1113c000-7fca1123a000 rw-p 00000000 00:00 0 7fca1123a000-7fca1123d000 ---p 00000000 00:00 0 7fca1123d000-7fca1133b000 rw-p 00000000 00:00 0 7fca1133b000-7fca1133c000 ---p 00000000 00:00 0 7fca1133c000-7fca11487000 rw-p 00000000 00:00 0 7fca11487000-7fca11646000 r--s 039e5000 ca:01 1188489 /usr/java/jdk1.7.0_67/jre/lib/rt.jar 7fca11646000-7fca1174a000 rw-p 00000000 00:00 0 7fca1174a000-7fca11769000 rw-p 00000000 00:00 0 7fca11769000-7fca1176f000 rw-p 00000000 00:00 0 7fca1176f000-7fca117bd000 rw-p 00000000 00:00 0 7fca117bd000-7fca117c0000 rw-p 00000000 00:00 0 7fca117c0000-7fca117e6000 rw-p 00000000 00:00 0 7fca117e6000-7fca117ec000 rw-p 00000000 00:00 0 7fca117ec000-7fca1183a000 rw-p 00000000 00:00 0 7fca1183a000-7fca11845000 rw-p 00000000 00:00 0 7fca11845000-7fca11863000 rw-p 00000000 00:00 0 7fca11863000-7fca1186e000 rw-p 00000000 00:00 0 7fca1186e000-7fca11924000 rw-p 00000000 00:00 0 7fca11924000-7fca1193e000 r-xp 00000000 ca:01 137234 /usr/java/jdk1.7.0_67/jre/lib/amd64/libzip.so 7fca1193e000-7fca11b3e000 ---p 0001a000 ca:01 137234 /usr/java/jdk1.7.0_67/jre/lib/amd64/libzip.so 7fca11b3e000-7fca11b3f000 rw-p 0001a000 ca:01 137234 /usr/java/jdk1.7.0_67/jre/lib/amd64/libzip.so 7fca11b3f000-7fca11b47000 rw-s 00000000 ca:01 395195 /tmp/hsperfdata_root/29229 7fca11b47000-7fca11b53000 r-xp 00000000 ca:01 262174 /lib64/libnss_files-2.12.so 7fca11b53000-7fca11d53000 ---p 0000c000 ca:01 262174 /lib64/libnss_files-2.12.so 7fca11d53000-7fca11d54000 r--p 0000c000 ca:01 262174 /lib64/libnss_files-2.12.so 7fca11d54000-7fca11d55000 rw-p 0000d000 ca:01 262174 /lib64/libnss_files-2.12.so 7fca11d5c000-7fca11d85000 r-xp 00000000 ca:01 137204 /usr/java/jdk1.7.0_67/jre/lib/amd64/libjava.so 7fca11d85000-7fca11f85000 ---p 00029000 ca:01 137204 /usr/java/jdk1.7.0_67/jre/lib/amd64/libjava.so 7fca11f85000-7fca11f87000 rw-p 00029000 ca:01 137204 /usr/java/jdk1.7.0_67/jre/lib/amd64/libjava.so 7fca11f87000-7fca11f94000 r-xp 00000000 ca:01 137233 /usr/java/jdk1.7.0_67/jre/lib/amd64/libverify.so 7fca11f94000-7fca12193000 ---p 0000d000 ca:01 137233 /usr/java/jdk1.7.0_67/jre/lib/amd64/libverify.so 7fca12193000-7fca12195000 rw-p 0000c000 ca:01 137233 /usr/java/jdk1.7.0_67/jre/lib/amd64/libverify.so 7fca12195000-7fca12198000 ---p 00000000 00:00 0 7fca12198000-7fca12296000 rw-p 00000000 00:00 0 7fca12296000-7fca12e06000 r-xp 00000000 ca:01 137238 /usr/java/jdk1.7.0_67/jre/lib/amd64/server/libjvm.so 7fca12e06000-7fca13005000 ---p 00b70000 ca:01 137238 /usr/java/jdk1.7.0_67/jre/lib/amd64/server/libjvm.so 7fca13005000-7fca130ca000 rw-p 00b6f000 ca:01 137238 /usr/java/jdk1.7.0_67/jre/lib/amd64/server/libjvm.so 7fca130ca000-7fca1310d000 rw-p 00000000 00:00 0 7fca1310d000-7fca13123000 r-xp 00000000 ca:01 396506 /usr/java/jdk1.7.0_67/lib/amd64/jli/libjli.so 7fca13123000-7fca13323000 ---p 00016000 ca:01 396506 /usr/java/jdk1.7.0_67/lib/amd64/jli/libjli.so 7fca13323000-7fca13324000 rw-p 00016000 ca:01 396506 /usr/java/jdk1.7.0_67/lib/amd64/jli/libjli.so 7fca13324000-7fca13325000 rw-p 00000000 00:00 0 7fca1332a000-7fca1332b000 rw-p 00000000 00:00 0 7fca1332b000-7fca1332c000 r--p 00000000 00:00 0 7fca1332c000-7fca1332d000 rw-p 00000000 00:00 0 7fffd7d48000-7fffd7d5d000 rw-p 00000000 00:00 0 [stack] 7fffd7d7e000-7fffd7d7f000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] VM Arguments: java_command: org.apache.catalina.util.ServerInfo Launcher Type: SUN_STANDARD Environment Variables: PATH=/sbin:/usr/sbin:/bin:/usr/bin Signal Handlers: SIGSEGV: [libjvm.so+0x99f4a0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGBUS: [libjvm.so+0x99f4a0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGFPE: [libjvm.so+0x81a860], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGPIPE: [libjvm.so+0x81a860], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGXFSZ: [libjvm.so+0x81a860], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGILL: [libjvm.so+0x81a860], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000 SIGUSR2: [libjvm.so+0x81c060], sa_mask[0]=0x00000000, sa_flags=0x10000004 SIGHUP: [libjvm.so+0x81d160], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGINT: [libjvm.so+0x81d160], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGTERM: [libjvm.so+0x81d160], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGQUIT: [libjvm.so+0x81d160], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

[羽羊]

接二楼错误日志 --------------- S Y S T E M --------------- OS:CentOS release 6.5 (Final) uname:Linux 2.6.32-431.23.3.el6.x86_64 #1 SMP Thu Jul 31 17:20:51 UTC 2014 x86_64 libc:glibc 2.12 NPTL 2.12 rlimit: STACK 10240k, CORE 0k, NPROC 7798, NOFILE 1024, AS 1048576k load average:0.00 0.00 0.00 /proc/meminfo: MemTotal: 1018600 kB MemFree: 66352 kB Buffers: 111188 kB Cached: 203388 kB SwapCached: 0 kB Active: 364536 kB Inactive: 505296 kB Active(anon): 231040 kB Inactive(anon): 324428 kB Active(file): 133496 kB Inactive(file): 180868 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 2097144 kB SwapFree: 2097144 kB Dirty: 76 kB Writeback: 0 kB AnonPages: 547128 kB Mapped: 27336 kB Shmem: 160 kB Slab: 64016 kB SReclaimable: 43904 kB SUnreclaim: 20112 kB KernelStack: 1312 kB PageTables: 3200 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 2606444 kB Committed_AS: 1512768 kB VmallocTotal: 34359738367 kB VmallocUsed: 7736 kB VmallocChunk: 34359726992 kB HardwareCorrupted: 0 kB AnonHugePages: 505856 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 6144 kB DirectMap2M: 1042432 kB CPU:total 1 (32 cores per cpu, 2 threads per core) family 6 model 45 stepping 7, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, aes, ht, tsc /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : Intel(R) Xeon(R) CPU E5-2630 0 @ 2.30GHz stepping : 7 cpu MHz : 2300.253 cache size : 15360 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush mmx fxsr sse sse2 ht syscall nx lm up rep_good unfair_spinlock pni ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm bogomips : 4600.50 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: Memory: 4k page, physical 1018600k(66352k free), swap 2097144k(2097144k free) vm_info: Java HotSpot(TM) 64-Bit Server VM (24.65-b04) for linux-amd64 JRE (1.7.0_67-b01), built on Jul 25 2014 09:20:21 by "java_re" with gcc 4.3.0 20080428 (Red Hat 4.3.0-8) time: Wed Jan 21 08:26:48 2015 elapsed time: 0 seconds

[其实我是真性情]

我给你断个楼好让你继续发

[执笔记忆的空白]

我接楼上帮你断个楼好让你继续发

[羽羊]

莫非无解~ 那我岂不是每天都删除一次，郁闷。

[羽羊]

最终方法，换成32位系统，问题初步得到解决，不知道后续会不会有问题，而且我发现，换成32位之后系统空闲内存居然有300多M，以前64位只有不到100，如果你是小内存比如阿里的1G内存，还是用32位的吧。

[乔不思]

我帮你断个楼好让你以后继续发

[cs_19_dn]

擦，我也遇到了，阿里云8G ，每天报这个错误，同问！楼主解决了要贴出来啊

[天子剑毅]

本地跑没问题，放到阿里云上就这样了。。不懂了

[george6020]

相同的问题 搞了几星期。。。没结果

[shepherdzhao]

这个问题我也遇到了，目前已解决。 主要的问题是阿里云服务器在有tomcat运行的情况下，会定时间启动一个java程序，这个程序有可能和运行时版本冲突，报OOM错误后直接崩溃。 我之前安装的java运行时版本是1.8，发生了这个问题后，重新安装了java1.7。修改了环境变量（JAVA_HOME，JRE_HOME）什么的，运行java -version显示版本正确，运行tomcat也显示运行时版本为1.7。但是，系统安装过alternatives，/usr/bin/ 目录下的 java程序链接的地址是原来1.8的地址（注意这一点）。重启tomcat后，依然每小时出现hs_err错误，但是从日志文件上看，错误的进程所使用的运行时仍然是1.8，也就是说这个发生错误的进程根本就没有通过环境变量所指向的地址来启动java运行时，而是从/usr/bin 下面启动的java运行时。将/usr/bin下面的java链接到1.7的目录后，就不再产生错误文件了。这说明问题的发生原因是这个不明的进程于与java 1.8运行时冲突。 初步的怀疑是阿里云服务器背后会定时启动个什么东西，可能就是阿里云盾或者阿里的监控程序造成的吧。 发生问题的同学，请注意一下/usr/bin下面的java所连接的地址到底是什么，出问题的进程是调用的这里，而不是环境变量所指向的java运行时 以上

[笨笨龍Shadow]

引用 12 楼 shepherdzhao 的回复:

这个问题我也遇到了，目前已解决。 主要的问题是阿里云服务器在有tomcat运行的情况下，会定时间启动一个java程序，这个程序有可能和运行时版本冲突，报OOM错误后直接崩溃。 我之前安装的java运行时版本是1.8，发生了这个问题后，重新安装了java1.7。修改了环境变量（JAVA_HOME，JRE_HOME）什么的，运行java -version显示版本正确，运行tomcat也显示运行时版本为1.7。但是，系统安装过alternatives，/usr/bin/ 目录下的 java程序链接的地址是原来1.8的地址（注意这一点）。重启tomcat后，依然每小时出现hs_err错误，但是从日志文件上看，错误的进程所使用的运行时仍然是1.8，也就是说这个发生错误的进程根本就没有通过环境变量所指向的地址来启动java运行时，而是从/usr/bin 下面启动的java运行时。将/usr/bin下面的java链接到1.7的目录后，就不再产生错误文件了。这说明问题的发生原因是这个不明的进程于与java 1.8运行时冲突。 初步的怀疑是阿里云服务器背后会定时启动个什么东西，可能就是阿里云盾或者阿里的监控程序造成的吧。 发生问题的同学，请注意一下/usr/bin下面的java所连接的地址到底是什么，出问题的进程是调用的这里，而不是环境变量所指向的java运行时 以上

请问怎么查看下边的JAVA连接的JDK？

[毕设王同学]

我的问题解决了，是因为环境变量的问题，目前遇到的CentOS安装完jdk之后默认不用配置环境变量，但是会报上述错误，我把环境变量配置上之后，间隔一晚未出现上述错误日志，后续仍在观察，但基本认定问题已解决