Confluence can't startup the service

Question

2020-01-15 17:22:35,298 INFO [Catalina-utility-1] [com.atlassian.confluence.lifecycle] contextInitialized Starting Confluence 6.15.7 [build 8100 based on commit hash e6b42acaec191a9bce4ab234dae0b1b08af15496] - synchrony version 2.1.0-release-confluence_6.15-32f7299a 2020-01-15 17:22:42,273 INFO [Catalina-utility-1] [springframework.web.context.ContextLoader] initWebApplicationContext Root WebApplicationContext: initialization started 2020-01-15 17:22:48,726 INFO [Catalina-utility-1] [com.atlassian.confluence.lifecycle] Loading EhCache cache manager 2020-01-15 17:23:15,492 INFO [Catalina-utility-1] [springframework.web.context.ContextLoader] initWebApplicationContext Root WebApplicationContext: initialization completed in 33219 ms 2020-01-15 17:23:35,992 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@2368b74e -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks! 2020-01-15 17:23:35,992 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@2368b74e -- APPARENT DEADLOCK!!! Complete Status: Managed Threads: 3 Active Threads: 3 Active Tasks: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@4e216f36 on thread: C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#0 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@5adb91c9 on thread: C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#2 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3d9bd0d1 on thread: C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#1 Pending Tasks: com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@374dddf8 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@311e4701 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@526014ab com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@177d890e com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@4e062404 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@d63448a com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@5f74ccc1 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@243a1bd8 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@5b632d5f com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@4c3365ad com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3558aa2e com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@41c88386 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3034735 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@544a54f5 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@24338d88 com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@2162ee3b com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@38412fcd Pool thread stack traces: Thread[C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#2,1,main] java.net.SocketInputStream.socketRead0(Native Method) java.net.SocketInputStream.socketRead(SocketInputStream.java:116) java.net.SocketInputStream.read(SocketInputStream.java:171) java.net.SocketInputStream.read(SocketInputStream.java:141) java.io.BufferedInputStream.fill(BufferedInputStream.java:246) java.io.BufferedInputStream.read(BufferedInputStream.java:265) java.io.DataInputStream.readInt(DataInputStream.java:387) org.h2.value.Transfer.readInt(Transfer.java:153) org.h2.engine.SessionRemote.done(SessionRemote.java:622) org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:144) org.h2.engine.SessionRemote.connectServer(SessionRemote.java:453) org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:334) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:116) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:100) org.h2.Driver.connect(Driver.java:69) com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696) Thread[C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#1,1,main] java.net.SocketInputStream.socketRead0(Native Method) java.net.SocketInputStream.socketRead(SocketInputStream.java:116) java.net.SocketInputStream.read(SocketInputStream.java:171) java.net.SocketInputStream.read(SocketInputStream.java:141) java.io.BufferedInputStream.fill(BufferedInputStream.java:246) java.io.BufferedInputStream.read(BufferedInputStream.java:265) java.io.DataInputStream.readInt(DataInputStream.java:387) org.h2.value.Transfer.readInt(Transfer.java:153) org.h2.engine.SessionRemote.done(SessionRemote.java:622) org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:144) org.h2.engine.SessionRemote.connectServer(SessionRemote.java:453) org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:334) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:116) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:100) org.h2.Driver.connect(Driver.java:69) com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696) Thread[C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-HelperThread-#0,1,main] java.net.SocketInputStream.socketRead0(Native Method) java.net.SocketInputStream.socketRead(SocketInputStream.java:116) java.net.SocketInputStream.read(SocketInputStream.java:171) java.net.SocketInputStream.read(SocketInputStream.java:141) java.io.BufferedInputStream.fill(BufferedInputStream.java:246) java.io.BufferedInputStream.read(BufferedInputStream.java:265) java.io.DataInputStream.readInt(DataInputStream.java:387) org.h2.value.Transfer.readInt(Transfer.java:153) org.h2.engine.SessionRemote.done(SessionRemote.java:622) org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:144) org.h2.engine.SessionRemote.connectServer(SessionRemote.java:453) org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:334) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:116) org.h2.jdbc.JdbcConnection.(JdbcConnection.java:100) org.h2.Driver.connect(Driver.java:69) com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203) com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138) com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125) com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44) com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870) com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696) 2020-01-15 17:24:36,054 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log Task com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@5adb91c9 (in deadlocked PoolThread) failed to complete in maximum time 60000ms. Trying interrupt(). 2020-01-15 17:24:36,054 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log Task com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3d9bd0d1 (in deadlocked PoolThread) failed to complete in maximum time 60000ms. Trying interrupt(). 2020-01-15 17:24:36,054 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|254e3556]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log Task com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@4e216f36 (in deadlocked PoolThread) failed to complete in maximum time 60000ms. Trying interrupt(). 2020-01-15 17:27:39,264 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|10e63781]-AdminTaskTimer] [mchange.v2.async.ThreadPoolAsynchronousRunner] log com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@9c5efa8 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks! 2020-01-15 17:27:39,265 WARN [C3P0PooledConnectionPoolManager[identityToken->2zdmvpa71ar8nzj1niwnzz|10e63781]-AdminTaskTimer] [mchange.v2.async.Thre

Shannon S · Answer

Hello there,

Thank you for raising this with us. We will need more information than what is provided here in order to solve this issue. We will need to know the following:

* What version of Confluence are you running?
* What database version are you using? Note if you are on the embedded H2 database, you will need to migrate ASAP to a supported database. 
* Is this a new installation, or an upgrade?
* When were you last able to start Confluence?
* Is your Confluence site able to communicate with your database server? Check out the following article for steps to troubleshoot this: Unable to start due to net.sf.hibernate.exception.GenericJDBCException Cannot open connection
* Please also have a look at your Confluence Server Logs. The logs you provided are lacking some specifics regarding the error, so you will find more helpful logs from your Server logs.

Looking forward to hearing from you!

Regards,

Shannon