# Liquibase upgradation from 2.1 to 3.1 **URL:** \ **Category:** Liquibase Development\ **Created:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855 "2014-07-24T17:54:00Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![nvoxland](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nvoxland](https://forum.liquibase.org/u/nvoxland)\ **Post date:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855/1 "2014-07-24T17:54:00Z")
You are getting an IncompatibleClassChangeError which usually means something needs to be recompiled. Have you tried fully rebuilding your application with the new liquibase 3.1.1 version?  There have also been some classloader fixes in 3.2.x if you wanted to try upgrading to the newest version. Nathan ---
**Author:** ![nvoxland](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nvoxland](https://forum.liquibase.org/u/nvoxland)\ **Post date:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855/2 "2014-07-24T17:54:00Z")
Yes, there were some changes with the ResourceAccessor API in 3.2. There was logic in XMLChangeLogParser and other locations that really belonged in the ResouceAccessor and there wasn’t a good way to change it while preserving compatibility, unfortunately. What getSourcesAsStream should do is return a set of opened InputStreams for the given path. If just one file corresponds to the path, just return a single-item set. If none match, return null. Nathan ---
**Author:** ![un1397030080986r77id](https://avatars.discourse-cdn.com/v4/letter/u/5f9b8f/32.png) [@un1397030080986r77id](https://forum.liquibase.org/u/un1397030080986r77id)\ **Post date:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855/3 "2014-07-24T17:54:00Z")
Hi Nathan   I tried upgrading to 3.2.0 but I think there have been major changes to ResourceAccessor. I am facing issues while compiling. I am having issues in following method getResourcesAsStream. earlier we did not have this method. we were using   getResourceAsStream in 3.1. The Java Doc does not seem to help much.   Thanks! ---
**Author:** ![mukeshsuyal](https://avatars.discourse-cdn.com/v4/letter/m/c37758/32.png) [@mukeshsuyal](https://forum.liquibase.org/u/mukeshsuyal)\ **Post date:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855/4 "2014-07-24T17:54:00Z")
hi we have been trying to upgrade from Liquibase 2.1 to 3.1   when our installer runs it gives following error and our databasechanglog script do not execute:   SEVERE 7/24/14 2:21 PM:liquibase: Cannot load class ‘liquibase/snapshot/ResultSetCache$ResultSetExtractor$1.class’ in classloader: [java.net.URLClassLoader@f39b3a](mailto:java.net.URLClassLoader@f39b3a).  Reason: java.lang.IllegalAccessError: class liquibase.snapshot.ResultSetCache$ResultSetExtractor$1 cannot access its superclass liquibase.executor.jvm.ColumnMapRowMapper java.lang.IllegalAccessError: class liquibase.snapshot.ResultSetCache$ResultSetExtractor$1 cannot access its superclass liquibase.executor.jvm.ColumnMapRowMapper  at java.lang.ClassLoader.defineClass1(Native Method)  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  at java.lang.ClassLoader.loadClass(ClassLoader.java:410)  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)  at liquibase.servicelocator.DefaultPackageScanClassResolver.addIfMatching(DefaultPackageScanClassResolver.java:361)  at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:329)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:207)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:113)  at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:83)  at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:170)  at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:145)  at liquibase.change.ChangeFactory.(ChangeFactory.java:25)  at liquibase.change.ChangeFactory.getInstance(ChangeFactory.java:43)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:330)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.handleIncludedChangeLog(XMLChangeLogSAXHandler.java:492)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:133)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.Liquibase.update(Liquibase.java:106)  at liquibase.integration.commandline.Main.doMigration(Main.java:684)  at liquibase.integration.commandline.Main.main(Main.java:116) SEVERE 7/24/14 2:21 PM:liquibase: Cannot load class ‘liquibase/lockservice/StandardLockService.class’ in classloader: [java.net.URLClassLoader@f39b3a](mailto:java.net.URLClassLoader@f39b3a).  Reason: java.lang.IncompatibleClassChangeError: Implementing class java.lang.IncompatibleClassChangeError: Implementing class  at java.lang.ClassLoader.defineClass1(Native Method)  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  at java.lang.ClassLoader.loadClass(ClassLoader.java:410)  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)  at liquibase.servicelocator.DefaultPackageScanClassResolver.addIfMatching(DefaultPackageScanClassResolver.java:361)  at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:329)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:207)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:113)  at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:83)  at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:170)  at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:145)  at liquibase.change.ChangeFactory.(ChangeFactory.java:25)  at liquibase.change.ChangeFactory.getInstance(ChangeFactory.java:43)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:330)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.handleIncludedChangeLog(XMLChangeLogSAXHandler.java:492)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:133)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.Liquibase.update(Liquibase.java:106)  at liquibase.integration.commandline.Main.doMigration(Main.java:684)  at liquibase.integration.commandline.Main.main(Main.java:116) SEVERE 7/24/14 2:21 PM:liquibase: Cannot load class ‘liquibase/lockservice/LockServiceImpl.class’ in classloader: [java.net.URLClassLoader@f39b3a](mailto:java.net.URLClassLoader@f39b3a).  Reason: java.lang.IncompatibleClassChangeError: Implementing class java.lang.IncompatibleClassChangeError: Implementing class  at java.lang.ClassLoader.defineClass1(Native Method)  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)  at java.lang.ClassLoader.defineClass1(Native Method)  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  at java.lang.ClassLoader.loadClass(ClassLoader.java:410)  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)  at liquibase.servicelocator.DefaultPackageScanClassResolver.addIfMatching(DefaultPackageScanClassResolver.java:361)  at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:329)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:207)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:113)  at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:83)  at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:170)  at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:145)  at liquibase.change.ChangeFactory.(ChangeFactory.java:25)  at liquibase.change.ChangeFactory.getInstance(ChangeFactory.java:43)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:330)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.handleIncludedChangeLog(XMLChangeLogSAXHandler.java:492)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:133)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.Liquibase.update(Liquibase.java:106)  at liquibase.integration.commandline.Main.doMigration(Main.java:684)  at liquibase.integration.commandline.Main.main(Main.java:116) SEVERE 7/24/14 2:21 PM:liquibase: Cannot load class ‘liquibase/lockservice/OfflineLockService.class’ in classloader: [java.net.URLClassLoader@f39b3a](mailto:java.net.URLClassLoader@f39b3a).  Reason: java.lang.IncompatibleClassChangeError: Implementing class java.lang.IncompatibleClassChangeError: Implementing class  at java.lang.ClassLoader.defineClass1(Native Method)  at java.lang.ClassLoader.defineClass(ClassLoader.java:791)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)  at java.net.URLClassLoader.access$100(URLClassLoader.java:71)  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)  at java.security.AccessController.doPrivileged(Native Method)  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)  at java.lang.ClassLoader.loadClass(ClassLoader.java:423)  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)  at java.lang.ClassLoader.loadClass(ClassLoader.java:410)  at java.lang.ClassLoader.loadClass(ClassLoader.java:356)  at liquibase.servicelocator.DefaultPackageScanClassResolver.addIfMatching(DefaultPackageScanClassResolver.java:361)  at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:329)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:207)  at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:113)  at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:83)  at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:170)  at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:145)  at liquibase.change.ChangeFactory.(ChangeFactory.java:25)  at liquibase.change.ChangeFactory.getInstance(ChangeFactory.java:43)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:330)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.handleIncludedChangeLog(XMLChangeLogSAXHandler.java:492)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:133)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.Liquibase.update(Liquibase.java:106)  at liquibase.integration.commandline.Main.doMigration(Main.java:684)  at liquibase.integration.commandline.Main.main(Main.java:116) INFO 7/24/14 2:21 PM:liquibase: Successfully released change log lock Liquibase Update Failed: liquibase.change.AbstractChange: method ()V not found SEVERE 7/24/14 2:21 PM:liquibase: liquibase.change.AbstractChange: method ()V not found java.lang.NoSuchMethodError: liquibase.change.AbstractChange: method ()V not found  at liquibase.change.core.DropProcedureChange.(DropProcedureChange.java:13)  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)  at java.lang.reflect.Constructor.newInstance(Constructor.java:525)  at java.lang.Class.newInstance0(Class.java:374)  at java.lang.Class.newInstance(Class.java:327)  at liquibase.change.ChangeFactory.register(ChangeFactory.java:55)  at liquibase.change.ChangeFactory.(ChangeFactory.java:29)  at liquibase.change.ChangeFactory.getInstance(ChangeFactory.java:43)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:330)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.handleIncludedChangeLog(XMLChangeLogSAXHandler.java:492)  at liquibase.parser.core.xml.XMLChangeLogSAXHandler.startElement(XMLChangeLogSAXHandler.java:133)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)  at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:182)  at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:775)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:353)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2717)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)  at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)  at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)  at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)  at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)  at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)  at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)  at liquibase.parser.core.xml.XMLChangeLogSAXParser.parse(XMLChangeLogSAXParser.java:98)  at liquibase.Liquibase.update(Liquibase.java:106)  at liquibase.integration.commandline.Main.doMigration(Main.java:684)  at liquibase.integration.commandline.Main.main(Main.java:116) For more information, use the --logLevel flag)     ============================ while we executethe liquibase update on command line the databasechangelog scripts excute without any issues.   We have tried hard to resolve the issue but could not figure out anything.   following are the few lines of code our Wise installer uses to  execute Liquibase update command   item: Custom Script Item   Filename=Display Progress Message.wse   Variable Name1=_CENTER_   Variable Value1=AB   Variable Name2=_WIDTH_   Variable Value2=320   Variable Name3=_MSG\_TITLE_   Variable Value3=Upgrading Database   Variable Name4=HELPFILE   Variable Value4=C:\Program Files\Wise Installation System\Help\Wise.hlp   Variable Name5=_OPTION_   Variable Value5=B   Variable Name6=_HEIGHT_   Variable Value6=80   Variable Name7=_MSG\_TEXT_   Variable Value7=Please Wait…   Variable Name8=_Y\_POS_   Variable Name9=_X\_POS_ end item: Set Variable   Variable=PARAM   Value=%MAINDIR%\bin\liquibase.bat end item: If/While Statement   Value=LEN(SQL\_PASSWORD) \> 0   Flags=00001101 end item: Set Variable   Variable=PARAM   Value=%PARAM% --password="%SQL\_PASSWORD%" end item: End Block end item: Set Variable   Variable=PARAM   Value=%PARAM% update \> “%INSTALLLOGFOLDER%liquibase\_bat.log” 2\>&1 end item: Include Script   Pathname=…\includes\wisescripts\RunVBSInCMD.wse end remarked item: Execute Program   Pathname=%MAINDIR%\bin\liquibase.bat   Command Line=–password="%SQL\_PASSWORD%" update \> “%INSTALLLOGFOLDER%liquibase\_bat.log” 2\>&1   Default Directory=%MAINDIR%\bin   Flags=00001010 end item: Set Variable   Variable=PARAM   Value=InstallFunctions.vbs CheckLog -l"%INSTALLLOGFOLDER%liquibase\_bat.log" -p"Liquibase Database Upgrade" -s"successful" -f"Failed" -r end item: Include Script   Pathname=…\includes\wisescripts\RunVBSInCMD.wse end item: Custom Script Item   Filename=Display Progress Message.wse   Variable Name1=_CENTER_   Variable Value1=AB   Variable Name2=_WIDTH_   Variable Value2=320   Variable Name3=_MSG\_TITLE_   Variable Value3=Upgrading Database   Variable Name4=HELPFILE   Variable Value4=C:\Program Files\Wise Installation System\Help\Wise.hlp   Variable Name5=_OPTION_   Variable Value5=A   Variable Name6=_Y\_POS_   Variable Name7=_MSG\_TEXT_   Variable Value7=Please Wait…   Variable Name8=_HEIGHT_   Variable Value8=80   Variable Name9=_X\_POS_ end   Following is the liquibase.batch file the installer executes to exute the databse upgrade     @echo off Setlocal EnableDelayedExpansion if "%OS%" == "Windows\_NT" setlocal set CP=%COWWW\_HOME%\config\liquibase for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (liquibase\*.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (9999\*-cowww-update.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (9999\*-cowww.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (cowww-upgrade\*.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (cowww\*.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (jtds\*.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (commons-logging\*.jar) do set CP=!CP!;%%f for /R %COWWW\_HOME%\webapps\cowww5\WEB-INF\lib %%f in (log4j\*.jar) do set CP=!CP!;%%f rem get command line args into a variable set CMD\_LINE\_ARGS=%1 if ""%1""=="""" goto done shift :setup if ""%1""=="""" goto done set CMD\_LINE\_ARGS=%CMD\_LINE\_ARGS% %1 shift goto setup :done set JAVA\_OPTS= "%JAVA\_HOME%\bin\java" -cp "%CP%" %JAVA\_OPTS% liquibase.integration.commandline.Main --defaultsFile=%COWWW\_HOME%\config\liquibase\liquibase.properties %CMD\_LINE\_ARGS%   any help in resolving this issue is appreciated!             ---
**Author:** ![un1397030080986r77id](https://avatars.discourse-cdn.com/v4/letter/u/5f9b8f/32.png) [@un1397030080986r77id](https://forum.liquibase.org/u/un1397030080986r77id)\ **Post date:** [July 24, 2014, 5:54pm UTC](https://forum.liquibase.org/t/liquibase-upgradation-from-2-1-to-3-1/3855/5 "2014-07-24T17:54:00Z")
Thanks Nathan!   Its not that the files are not compiling. our build process does not give any issues. the problem is coming when the installer tries to execute liquibase update. Installer works fine incase of clean install. we are experiencing this incase of upgrade   Following is what the installer is trying to do.   1. remove existing 2.1 liquibase jar 2. copy new 3.1 liquibase jar at the desired location 3. execute liquibase update   Please also note that when we run liquibase update in the command prompt, it works fine.   I can try with 3.2.x to see how it works.