Confluence timeout error

[Sekyeong Yoo]

Hi

We use Confluence 6.0.6 

When I try to edit the page, I get the following error

8-Jun-2017 09:14:07.739 WARN [ContainerBackgroundProcessor[StandardEngine[Standalone]]] org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread "http-nio-8090-exec-11" (id=5760) has been active for 69,108 milliseconds (since 6/8/17 9:12 AM) to serve the same request for http://elecsvr:8090/conf/display/VB/BT_LAH_Diagnose_Modul_Climatronic_Erprobung_Validation?src=contextnavpagetreemode and may be stuck (configured threshold for this StuckThreadDetectionValve is 60 seconds). There is/are 4 thread(s) in total that are monitored by this Valve and may be stuck.
java.lang.Throwable
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:171)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:101)
at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:144)
at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:174)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3008)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3469)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3459)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3900)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2501)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1966)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:379)
at net.java.ao.EntityManager.find(EntityManager.java:671)
at net.java.ao.EntityManager.find(EntityManager.java:621)

[AnnWorley]

The error from the catalina log is of limited help. Please also check the <confluence_home>/logs/atlassian-confluence.log for more specific editing or Synchrony errors.

The <confluence_home> directory is the path defined in the following file: <confluence_install>/confluence/WEB-INF/classes/confluence-init.properties