Setting Derby NetworkServer JVM size using NetworkServerControl
Hi, I have an urgent problem that I have not been able to solve by myself. I am populating many derby databases with data in preparation for going live with a new application. After opening about 10 databases, the Derby Network Server crashes with an java.lang.OutOfMemoryError. See derby log below. We start the Derby Network Server with a batch file that I also have below. I think I need to allocate more memory to the Derby Network Server's JVM but I can't see how to do that using the NetworkServerControl to start the server. Does anyone know how to do this? What is a reasonable memory allocation for the JVM? Another question I have is: Am I doing something wrong having by having Derby load this many databases? I am using Hibernate JPA with Derby for my application. I am closing the EntityManagerFactory and EntityManager objects when I close the application. Your assistance and advice is greatly appreciated. Thanks, Dan =start derby server.bat file= f: cd f:\epns\database\EditorDatabase %DERBY_HOME%\bin\NetworkServerControl start -h secapp -p 1527 ===derby server crashed = ran out of memory == 2011-11-08 21:53:28.187 GMT : Apache Derby Network Server - 10.6.1.0 - (938214) started and ready to accept connections on port 1527 2011-11-08 22:12:56.443 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance a816c00e-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\DBEDIT-B with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:26:30.306 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 274b9034-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011103AD with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:28:27.370 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 636e50d2-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011103AC with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:31:06.678 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance f7f21170-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011100BM with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:33:08.717 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 64d6d20e-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011102-A with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:37:12.133 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 2a1c92ac-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011200-Y with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:41:16.888 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance c7c3534a-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011201-F with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:43:54.771 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance bdcb13e8-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\DBITST-A with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:48:35.977 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 74f89535-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011101AE with class loader
Re: Setting Derby NetworkServer JVM size using NetworkServerControl
append: DERBY_OPTS=-Xms1g -Xmx1g to bin\derby_common.bat On Wed, Nov 9, 2011 at 5:39 PM, Hawley, Dan dan.haw...@lmco.com wrote: Hi, I have an urgent problem that I have not been able to solve by myself. I am populating many derby databases with data in preparation for going live with a new application. After opening about 10 databases, the Derby Network Server crashes with an java.lang.OutOfMemoryError. See derby log below. We start the Derby Network Server with a batch file that I also have below. I think I need to allocate more memory to the Derby Network Server's JVM but I can't see how to do that using the NetworkServerControl to start the server. Does anyone know how to do this? What is a reasonable memory allocation for the JVM? Another question I have is: Am I doing something wrong having by having Derby load this many databases? I am using Hibernate JPA with Derby for my application. I am closing the EntityManagerFactory and EntityManager objects when I close the application. Your assistance and advice is greatly appreciated. Thanks, Dan =start derby server.bat file= f: cd f:\epns\database\EditorDatabase %DERBY_HOME%\bin\NetworkServerControl start -h secapp -p 1527 ===derby server crashed = ran out of memory == 2011-11-08 21:53:28.187 GMT : Apache Derby Network Server - 10.6.1.0 - (938214) started and ready to accept connections on port 1527 2011-11-08 22:12:56.443 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance a816c00e-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\DBEDIT-B with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:26:30.306 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 274b9034-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011103AD with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:28:27.370 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 636e50d2-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011103AC with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:31:06.678 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance f7f21170-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011100BM with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:33:08.717 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 64d6d20e-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011102-A with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:37:12.133 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance 2a1c92ac-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011200-Y with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:41:16.888 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance c7c3534a-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\011201-F with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:43:54.771 GMT: Booting Derby version The Apache Software Foundation - Apache Derby - 10.6.1.0 - (938214): instance bdcb13e8-0133-852b-e9db-003a53a0 on database directory F:\EPNS\database\EditorDatabase\DBITST-A with class loader sun.misc.Launcher$AppClassLoader@fabe9 Database Class Loader started - derby.database.classpath='' 2011-11-08 22:48:35.977 GMT: Booting Derby version The Apache
