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Type: Bug
Resolution: Unresolved
Priority: Highest
Fix Version/s: None
Affects Version/s: 9.2.9
Component/s: Core - Email, Upgrade - ZDU
Labels:
- ewt-rtb-service-operations-and-tech-entropy
- internal-kickoff

Symptom Severity:
Severity 2 - Major
Bug Fix Policy:
View Atlassian Server bug fix policy

Version info

Upgrading to Confluence 9.2.9 from any prior version

Description

Issue Summary

When upgrading to Confluence 9.2.9, if the SMTP mail server configuration in Bandana includes the lastSuccessful field, the upgrade will fail with the error message "Deep copy failed for mail server config", preventing Confluence from starting.

Steps to Reproduce

Install Confluence version X (e.g., 8.5.x).

Run the following against Confluence's database:

INSERT INTO bandana (bandanaid, bandanacontext, bandanakey, bandanavalue)
VALUES (
    9076763, 
    '_GLOBAL', 
    'atlassian.confluence.smtp.mail.accounts', 
    '<linked-hash-map>
      <entry>
        <long>1705372565455</long>
        <com.atlassian.confluence.jmx.JmxSMTPMailServer serialization="custom">
          <com.atlassian.mail.server.AbstractMailServer>
            <default>
              <connectionTimeout>10000</connectionTimeout>
              <debug>false</debug>
              <isAuthenticating>true</isAuthenticating>
              <timeout>10000</timeout>
              <tlsRequired>false</tlsRequired>
              <hostname>localhost</hostname>
              <id>1705372565455</id>
              <mailProtocol>SMTP</mailProtocol>
              <name>localhost</name>
              <password>password123</password>
              <port>25</port>
              <props>
                <property name="mail.debug" value="false"/>
                <property name="mail.transport.protocol" value="smtp"/>
                <property name="mail.smtp.port" value="25"/>
                <property name="mail.smtp.quitwait" value="false"/>
                <property name="mail.smtp.timeout" value="10000"/>
                <property name="mail.smtp.auth" value="true"/>
                <property name="mail.smtp.host" value="localhost"/>
                <property name="mail.smtp.connectiontimeout" value="10000"/>
              </props>
              <username>admin@localhost.local</username>
            </default>
          </com.atlassian.mail.server.AbstractMailServer>
          <com.atlassian.mail.server.impl.SMTPMailServerImpl>
            <default>
              <isSessionServer>false</isSessionServer>
              <removePrecedence>false</removePrecedence>
              <tlsHostnameCheckRequired>true</tlsHostnameCheckRequired>
              <defaultFrom>admin@localhost.local</defaultFrom>
              <prefix>Confluenceserver</prefix>
            </default>
          </com.atlassian.mail.server.impl.SMTPMailServerImpl>
          <com.atlassian.confluence.jmx.JmxSMTPMailServer>
            <default>
              <emailsAttempted>
                <value>1541</value>
              </emailsAttempted>
              <emailsSent>
                <value>1</value>
              </emailsSent>
              <fromName>Confluence</fromName>
              <lastSuccessful>2024-01-23 06:49:13.18 UTC</lastSuccessful>
            </default>
          </com.atlassian.confluence.jmx.JmxSMTPMailServer>
        </com.atlassian.confluence.jmx.JmxSMTPMailServer>
      </entry>
    </linked-hash-map>'
);

Upgrade Confluence to version 9.2.9

Expected Results

Confluence upgrades successfully to version 9.2.9 without errors (and starts up as expected).

Actual Results

Confluence fails to start after the upgrade with the below error:

atlassian-confluence.log

2025-10-27 12:40:28,034 ERROR [Catalina-utility-1] [atlassian.confluence.plugin.PluginFrameworkContextListener] launchUpgrades Upgrade failed, application will not start: java.lang.RuntimeException: Deep copy failed for mail server config.
com.atlassian.confluence.upgrade.UpgradeException: java.lang.RuntimeException: Deep copy failed for mail server config.
	at com.atlassian.confluence.upgrade.impl.DefaultUpgradeFinalizationManager.finalizeIfNeeded(DefaultUpgradeFinalizationManager.java:130)
	at com.atlassian.confluence.upgrade.impl.DefaultUpgradeFinalizationManager.finalizeIfNeeded(DefaultUpgradeFinalizationManager.java:104)
	at com.atlassian.confluence.upgrade.impl.DefaultUpgradeManager.finalizeIfNeeded(DefaultUpgradeManager.java:109)
	at com.atlassian.confluence.upgrade.AbstractUpgradeManager.runAllUpgradeTasks(AbstractUpgradeManager.java:185)
	at com.atlassian.confluence.upgrade.AbstractUpgradeManager.upgrade(AbstractUpgradeManager.java:140)
	at com.atlassian.confluence.plugin.PluginFrameworkContextListener.launchUpgrades(PluginFrameworkContextListener.java:127)
	at com.atlassian.confluence.plugin.PluginFrameworkContextListener.contextInitialized(PluginFrameworkContextListener.java:83)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4057)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4501)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:164)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1203)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1193)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.RuntimeException: Deep copy failed for mail server config.
	at com.atlassian.confluence.mail.MailServerSerializationService.deepCopy(MailServerSerializationService.java:38)
	at com.atlassian.confluence.mail.ConfluenceMailServerManager.deepCopyUsingSerialisation(ConfluenceMailServerManager.java:381)
	at com.atlassian.confluence.mail.ConfluenceMailServerManager.saveServerMap(ConfluenceMailServerManager.java:250)
	at com.atlassian.confluence.upgrade.upgradetask.SecureMailServerSecretUpgradeTask.doUpgrade(SecureMailServerSecretUpgradeTask.java:66)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:355)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:379)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:223)
	at jdk.proxy4/jdk.proxy4.$Proxy294.doUpgrade(Unknown Source)
	at com.atlassian.confluence.upgrade.impl.DefaultUpgradeFinalizationManager.actionOnUpgradeTask(DefaultUpgradeFinalizationManager.java:156)
	at com.atlassian.confluence.upgrade.impl.DefaultUpgradeFinalizationManager.finalizeIfNeeded(DefaultUpgradeFinalizationManager.java:122)
	... 17 more
Caused by: com.atlassian.confluence.impl.util.serialize.exception.DisallowedClassException: Unexpected class in serialized data: java.util.Date
	at com.atlassian.confluence.impl.util.serialize.SecureClassLoaderAwareObjectInputStream.resolveClass(SecureClassLoaderAwareObjectInputStream.java:30)
	at java.base/java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2061)
	at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1927)
	at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2252)
	at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1762)
	at java.base/java.io.ObjectInputStream$FieldValues.<init>(ObjectInputStream.java:2618)
	at java.base/java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2469)
	at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2284)
	at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1762)
	at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:540)
	at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:498)
	at java.base/java.util.HashMap.readObject(HashMap.java:1560)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1102)
	at java.base/java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2444)
	at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2284)
	at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1762)
	at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:540)
	at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:498)
	at com.atlassian.confluence.impl.util.serialize.SecureObjectSerializer.deserialize(SecureObjectSerializer.java:35)
	at com.atlassian.confluence.mail.MailServerSerializationService.deepCopy(MailServerSerializationService.java:35)
	... 32 more

Workaround

Shut down Confluence
Take a full database backup

Run the following against Confluence's Postgres database:

UPDATE bandana
SET bandanavalue = REGEXP_REPLACE(
    bandanavalue, 
    '<lastSuccessful>[^<]*</lastSuccessful>', 
    '', 
    'g')
WHERE bandanacontext = '_GLOBAL'
  AND bandanakey = 'atlassian.confluence.smtp.mail.accounts';

For other databases, work with your DBA to remove the lastSuccessful entry in atlassian.confluence.smtp.mail.accounts:
```
select * from bandana WHERE BANDANAKEY = 'atlassian.confluence.smtp.mail.accounts';
```

Start Confluence again

Details

Description

Version info

Description

Issue Summary

Steps to Reproduce

Expected Results

Actual Results

Workaround

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