java.sql.SQLException: Protocol violation caught while accessing a page and Oracle DB is used
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問題
Users are not able to access particular pages in Confluence.
atlassian-confluence.log に次のメッセージが出力される。
2015-09-02 08:38:58,612 ERROR [http-bio-8090-exec-24258] [sf.hibernate.collection.PersistentCollection] initialize Failed to lazily initialize a collection
-- url: /display/webservices/CMS+Essentials | page: 52895049 | userName: mh993 | referer: https://<URL>/display/webservices/Home | action: viewpage
net.sf.hibernate.exception.GenericJDBCException: could not initialize collection: [com.atlassian.confluence.core.ContentEntityObject.bodyContents#52895049]
at net.sf.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCodeConverter.java:90)
at net.sf.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java:79)
...
Caused by: java.sql.SQLException: Protocol violation: [ 14, 34, ]
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:669)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249)
at oracle.jdbc.driver.T4C8TTIClob.read(T4C8TTIClob.java:245)
at oracle.jdbc.driver.T4CConnection.getChars(T4CConnection.java:3901)
at oracle.sql.CLOB.getChars(CLOB.java:517)
at oracle.sql.CLOB.getSubString(CLOB.java:354)
at org.springframework.jdbc.support.lob.OracleLobHandler.getClobAsString(OracleLobHandler.java:187)
...
2015-09-02 08:38:58,628 ERROR [http-bio-8090-exec-24258] [sf.hibernate.transaction.JDBCTransaction] rollback Rollback failed
-- url: /display/webservices/CMS+Essentials | userName: mh993 | referer: https://<URL>/display/webservices/Home
java.sql.SQLException: Protocol violation: [ 0, ]
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:669)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249)
at oracle.jdbc.driver.T4C7Ocommoncall.doOROLLBACK(T4C7Ocommoncall.java:66)診断
環境
As
SQLException: Protocol violationitself is normally caused by the Oracle driver. Therefore, first please ensure that you've used the correct Database JDBC Driver in your Confluence instance.Your Confluence instance is configured to use Oracle ojdbc7.jar version 12.1.0.1 to connect to your Oracle 12c Database.
原因
Should the issue still persist after you use the correct JDBC Driver and indeed you're using Oracle ojdbc7.jar version 12.1.0.1 for your Oracle 12c Database, you are then hitting a known bug in Oracle ojdbc7.jar version 12.1.0.1 driver itself as discussed in this StackOverflow post.
ソリューション
- Confluence を停止します。
- Download ojdbc7.jar version 12.1.0.2.
- Update your JDBC driver by copying the driver JAR file to the
<Confluence-Installation>/confluence/WEB-INF/lib - Confluence を再起動します。