When I tried to start the cloudera manager service

 service cloudera-scm-server start
Starting cloudera-scm-server:                              [FAILED]

In the log, I see this

2014-10-27 20:33:54,098  INFO [main:support.GenericApplicationContext@456] Refreshing org.springframework.context.support.GenericApplicationContext@785f87fe: startup date [Mon Oct 27 20:33:54 IST 2014]; root of context hierarchy
2014-10-27 20:33:54,101  INFO [main:support.DefaultListableBeanFactory@557] Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@fb728a9: defining beans [commandLineConfigurationBean,entityManagerFactoryBean,com.cloudera.server.cmf.TrialState,com.cloudera.server.cmf.TrialManager,com.cloudera.cmf.crypto.LicenseLoader]; root of factory hierarchy
2014-10-27 20:33:54,235  INFO [main:enterprise.CommonMain@105] Reading database properties from /etc/cloudera-scm-server/db.properties
2014-10-27 20:33:54,242  INFO [main:enterprise.CommonMain@166] Statistics not enabled, c3p0 JMX disabled
2014-10-27 20:33:54,479  INFO [main:common.Version@37] HCANN000001: Hibernate Commons Annotations {4.0.2.Final}
2014-10-27 20:33:54,490  INFO [main:hibernate.Version@41] HHH000412: Hibernate Core {4.2.2.Final}
2014-10-27 20:33:54,493  INFO [main:cfg.Environment@239] HHH000206: hibernate.properties not found
2014-10-27 20:33:54,496  INFO [main:cfg.Environment@342] HHH000021: Bytecode provider name : javassist
2014-10-27 20:33:54,937  INFO [main:support.DefaultListableBeanFactory@422] Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@fb728a9: defining beans [commandLineConfigurationBean,entityManagerFactoryBean,com.cloudera.server.cmf.TrialState,com.cloudera.server.cmf.TrialManager,com.cloudera.cmf.crypto.LicenseLoader]; root of factory hierarchy
2014-10-27 20:33:54,938 ERROR [main:cmf.Main@204] Server failed.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.cloudera.server.cmf.TrialState': Cannot resolve reference to bean 'entityManagerFactoryBean' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactoryBean': FactoryBean threw exception on object creation; nested exception is javax.persistence.PersistenceException: Unable to configure EntityManagerFactory
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:616)
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:148)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at com.cloudera.server.cmf.Main.bootstrapSpringContext(Main.java:362)
    at com.cloudera.server.cmf.Main.<init>(Main.java:216)
    at com.cloudera.server.cmf.Main.main(Main.java:199)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactoryBean': FactoryBean threw exception on object creation; nested exception is javax.persistence.PersistenceException: Unable to configure EntityManagerFactory
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:149)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1440)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:247)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
    ... 17 more
Caused by: javax.persistence.PersistenceException: Unable to configure EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:387)
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:58)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)
    at com.cloudera.enterprise.CommonMain.setupHibernate(CommonMain.java:171)
    at com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean.getObject(EntityManagerFactoryBean.java:92)
    at com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean.getObject(EntityManagerFactoryBean.java:50)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
    ... 22 more
Caused by: java.lang.RuntimeException: Error while reading file:/usr/share/cmf/
    at org.hibernate.ejb.packaging.NativeScanner.getClassesInJar(NativeScanner.java:131)
    at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(Ejb3Configuration.java:487)
    at org.hibernate.ejb.Ejb3Configuration.addMetadataFromScan(Ejb3Configuration.java:477)
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:363)
    ... 28 more
Caused by: java.io.FileNotFoundException: /usr/share/cmf/python/Lib/ServerLogSearcher$py.class (Permission denied)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(FileInputStream.java:146)
    at org.hibernate.ejb.packaging.ExplodedJarVisitor.getClassNamesInTree(ExplodedJarVisitor.java:126)
    at org.hibernate.ejb.packaging.ExplodedJarVisitor.getClassNamesInTree(ExplodedJarVisitor.java:134)
    at org.hibernate.ejb.packaging.ExplodedJarVisitor.getClassNamesInTree(ExplodedJarVisitor.java:134)
    at org.hibernate.ejb.packaging.ExplodedJarVisitor.doProcessElements(ExplodedJarVisitor.java:92)
    at org.hibernate.ejb.packaging.AbstractJarVisitor.getMatchingEntries(AbstractJarVisitor.java:149)
    at org.hibernate.ejb.packaging.NativeScanner.getClassesInJar(NativeScanner.java:128)
    ... 31 more

Can you please help me in resolving the issue.

I gave 644 permission to /usr/share/cmf/python/Lib. Still it failed with the same error.