Why did my server crash and what to do to prevent this?
hi there,
i've been following the installation guide on single host and all looked well until yesterday all of a sudden i couldn't see my mail tab when using webmail.
i tried re-logging in several times and from three computers at home but no mail tab was dispayed (calendar, address book, etc were fine). in some occasions i have been displayed an error msg saying i should reconfigure the server.
so i went on today to check the server but having a very limited knowledge of administration i couldn't figure out what to check and where so i stopped all services as advised in single host guide. notably web and messaging servers (or services?) weren't running. i restarted them and now require some help to diagnose why this all happened as i was not getting any emails until the server was restarted.
i was able to log in yesterday morning however in the afternoon server has crashed. it didn't restart or hung up but web server wasn't running anymore. the last email i received was 3.21 pm yesterday. after i restarted all services today, a few emails were displayed immediately with current date and time (10 am today), however i don't know whether these were emails received while server was 'malfuntioning' or they are some left overs from last seconds of working.
i remember myself running update service on the server yesterday and it looked okay today's morning when i found it finished updating the computer. could this be the reason? did update service stopped web server from running?
also after i restarted the machine this morning i had to re-run all services all over again. don't they just start automatically upon reboot? what if power fails and my APC UPS shuts machine down and then boots it back when power regains?
pls help me as i am new guy on the block and want to stick to Sun products but don't want to be put off by some mysterious errors and instability of such a great software package which CommSuite defintiely is.
Graham_Brown wrote:
i've been following the installation guide on single host and all looked well until yesterday all of a sudden i couldn't see my mail tab when using webmail.If you cannot see the mail-tab you need to verify whether the messaging server processes are running. It helps to have a high-level view of how things fit together:
http://docs.sun.com/app/docs/doc/819-4440/6n6jfgch0?a=view
In this case for the mail-tab to work you need messaging server running, specifically the mshttpd (webmail) process and the imapd (IMAP) process.
i tried re-logging in several times and from three computers at home but no mail tab was dispayed (calendar, address book, etc were fine). in some occasions i have been displayed an error msg saying i should reconfigure the server.The error message advising to reconfigure the server is misleading. If this was the first time you accessed the comms-express interface and had no mail-tab then the message is pointing out that you may have misconfigured something (which was really easy to do in earlier releases). As you had already successfully accessed the mail-tab this is more indicating that something is now broken/not-running correctly.
so i went on today to check the server but having a very limited knowledge of administration i couldn't figure out what to check and where so i stopped all services as advised in single host guide. notably web and messaging servers (or services?) weren't running. i restarted them and now require some help to diagnose why this all happened as i was not getting any emails until the server was restarted.Four things you can do at this juncture:
1. Configure coreadm to capture any future core dumps (assuming of course the processes died abnormally e.g. coding issue, memory starvation ...) http://docs.sun.com/app/docs/doc/819-5355/6n7eo3v6v?a=view
2. Enable auto-restart of processes. http://docs.sun.com/app/docs/doc/819-4428/bgadd?a=view
3. Check patching levels and update to address known issues. http://www.sun.com/bigadmin/hubs/comms/downloads/updates.jsp#cp1
4. Log a Sun Support Case to have the issue investigated (assuming you have a support contract). http://msg.wikidoc.info/index.php/Submit_sun_support_request
i was able to log in yesterday morning however in the afternoon server has crashed. You need to be very specific about what actually 'crashed'.
Saying the "server has crashed" implies that the entire system (at the hardware/OS level) crashed/rebooted.
If the 'webserver' has crashed then you would be able to access the system via SSH (so the hardware/OS is working) but when you connect to the server using a webclient to get mail, you don't get a connection.
If the 'mailserver' has crashed then you would be able to log into Comms Express or at least see the login page (webserver is working) but one or more components are not working (if you cannot login then chances are there are directory server issues, if there is no mail-tab then this is mail-server issues, no calendar tab, calendar-server issues, no address-book then potentially directory-server issues and so on).
it didn't restart or hung up but web server wasn't running anymore. the last email i received was 3.21 pm yesterday. after i restarted all services today, a few emails were displayed immediately with current date and time (10 am today), however i don't know whether these were emails received while server was 'malfuntioning' or they are some left overs from last seconds of working.If you have enabled mail logging then you can see when the emails were being accepted.
http://docs.sun.com/app/docs/doc/819-2650/6n4u4dtv9?a=view#bgbew
i remember myself running update service on the server yesterday and it looked okay today's morning when i found it finished updating the computer. could this be the reason? did update service stopped web server from running?Which 'update service' are you referring to?
also after i restarted the machine this morning i had to re-run all services all over again. don't they just start automatically upon reboot? what if power fails and my APC UPS shuts machine down and then boots it back when power regains?You need to configure the various components to start-on-boot using /etc/init.d/* scripts. This is a standard system-administration task.
pls help me as i am new guy on the block and want to stick to Sun products but don't want to be put off by some mysterious errors and instability of such a great software package which CommSuite defintiely is.At this juncture I recommend that you investigate Solaris 10 administration training. The issues you have described aren't necessarily isolated to just CommSuite but are more standard system-admin tasks.
Regards,
Shane.
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OS: Oracle Solaris 11.1 SPARC
Copyright (c) 1983, 2012, Oracle and/or its affiliates. All rights reserved.
Assembled 19 September 2012
uname:SunOS 5.11 11.1 sun4v
(T2 libthread)
rlimit: STACK 8192k, CORE infinity, NOFILE 65536, AS infinity
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--- called from signal handler with signal 11 (SIGSEGV) ---
ffffffff7ec1a7c4 memcpy%sun4v-hwcap3 (103d34720, 10a7e7710, 108ae1060, 6300, 0, ffffffff5f66394b) + 990
ffffffff36102fa4 ZIP_GetEntry (103d34720, ffffffff636f66a4, bd, 103d347f0, a26f1c, 2f) + e4
ffffffff36103440 Java_java_util_zip_ZipFile_getEntry (2b, ffffffff636f66a4, 103d34720, ffffffff636f6b70, 2b, 1) + a8
ffffffff7586ac1c * *java/util/zip/ZipFile.getEntry(J[BZ)J [compiled]
ffffffff75b61b58 * *java/util/zip/ZipFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry; [compiled] +39 (line 606)
ffffffff75b61b58 * *java/util/jar/JarFile.getEntry(Ljava/lang/String;)Ljava/util/zip/ZipEntry;+3 (line 452)
ffffffff75b61b58 * *weblogic/utils/classloaders/ZipClassFinder.getSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source;+36 (line 75)
ffffffff75b6eb84 * *weblogic/utils/classloaders/JarClassFinder.getSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +6 (line 100)
ffffffff75a40938 * *weblogic/utils/classloaders/AbstractClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +74 (line 58)
ffffffff75976c88 * *weblogic/utils/classloaders/MultiClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +30 (line 114)
ffffffff75976c88 * *weblogic/utils/classloaders/MultiClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +30 (line 114)
ffffffff75976c88 * *weblogic/utils/classloaders/MultiClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +30 (line 114)
ffffffff75806d10 * weblogic/application/utils/CompositeWebAppFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source;+5 (line 176)
ffffffff75976c88 * *weblogic/utils/classloaders/MultiClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +30 (line 114)
ffffffff75976c88 * *weblogic/utils/classloaders/MultiClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source; [compiled] +30 (line 114)
ffffffff75806d10 * weblogic/utils/classloaders/CodeGenClassFinder.getClassSource(Ljava/lang/String;)Lweblogic/utils/classloaders/Source;+43 (line 48)
ffffffff75806d10 * weblogic/utils/classloaders/GenericClassLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;+87 (line 571)
ffffffff75806d10 * weblogic/utils/classloaders/GenericClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;+117 (line 515)
ffffffff75806d10 * weblogic/utils/classloaders/ChangeAwareClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;+60 (line 121)
ffffffff75a465c8 * *java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class; [compiled] +71 (line 836)
ffffffff75db42c0 * *java/lang/ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class; [compiled] +4 (line 714)
ffffffff75806d10 * weblogic/utils/classloaders/GenericClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+2 (line 358)
ffffffff75806d10 * weblogic/utils/classloaders/ChangeAwareClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+27 (line 83)
ffffffff7580024c * StubRoutines (1)
ffffffff3691f44c __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_ (ffffffff636f7f98, 10234f000, 2, c, 2, 10) + 2f4
ffffffff36e546c0 __1cJJavaCallsMcall_virtual6FpnJJavaValue_nGHandle_nLKlassHandle_pnGSymbol_63pnGThread__v_ (ffffffff636f7f98, 1013e7748, 10234f000, 10011bf30, 100119ec0, 772d4ec08) + 1b8
ffffffff3725bf0c __1cQSystemDictionaryTload_instance_class6FpnGSymbol_nGHandle_pnGThread__nTinstanceKlassHandle__ (105cb6100, 1013e7978, 10234f000, 102b6e500, 0, 1013e7748) + 494
ffffffff3725a028 __1cQSystemDictionarybEresolve_instance_class_or_null6FpnGSymbol_nGHandle_3pnGThread__pnMklassOopDesc__ (105cb6100, 19dc00, 70, 10234f000, 70, 1013e7700) + ae0
ffffffff37257800 __1cQSystemDictionaryPresolve_or_fail6FpnGSymbol_nGHandle_3bpnGThread__pnMklassOopDesc__ (105cb6100, 1013e76f0, 1013e76f8, 1, 10234f000, 1) + 290
ffffffff368ba9dc __1cTconstantPoolOopDescNklass_at_impl6FnSconstantPoolHandle_ipnGThread__pnMklassOopDesc__ (10201b6e0, 1013e7978, 10234f000, 10201b6e0, 783cfb098, ffffffff37588000) + 264
ffffffff36937380 __1cSInterpreterRuntimeE_new6FpnKJavaThread_pnTconstantPoolOopDesc_i_v_ (10234f000, 77548b730, 49, 10201b6e0, 1013e76e8, 10234f000) + b8
ffffffff7581ab58 * com/jdedwards/base/logging/log4j/JdeLogger.warn(ILjava/lang/String;Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Throwable;)V+14
ffffffff75807bcc * com/jdedwards/system/security/proxy/SecurityServerProxyImpl.install(Ljava/util/Hashtable;)Lcom/jdedwards/system/security/proxy/SecurityServerProxyImpl;+30
ffffffff75806d10 * com/jdedwards/system/security/proxy/SecurityServerProxyFactory.create(Ljava/util/Hashtable;)Lcom/jdedwards/system/security/SecurityServer;+1
ffffffff75807898 * com/jdedwards/system/security/SecurityServerInstance.getInstance()Lcom/jdedwards/system/security/SecurityServer;+27
ffffffff75806d10 * com/jdedwards/mgmt/security/UserManager.checkPassword(Ljava/lang/String;Ljava/lang/String;)Z+59
ffffffff75806b24 * com/jdedwards/mgmt/security/UserManagerImpl.checkPassword(Ljava/lang/String;Ljava/lang/String;)Z+5
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# A fatal error has been detected by the Java Runtime Environment:
# SIGSEGV (0xb) at pc=0xffffffff7ec1a544, pid=1127, tid=20
# JRE version: 7.0_25-b11
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode solaris-sparc compressed oops)
# Problematic frame:
# C [libc.so.1+0x11a544] memcpy%sun4v-hwcap3+0x710
# Core dump written. Default location: /slot/ems9437/appmgr/Oracle/Middleware/user_projects/domains/smc_domain/core or core.1127
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
--------------- T H R E A D ---------------
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siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0xffffffff5f6ce000
I ran the suspect code which i believed was causing the issue as a standalone Java program using the same Java executable and it worked fine without any crash.
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