linux的clientmqueue問題和No space left on device

今日開啟程式發現無法訪問，一看後台日誌提示

2012-11-29 10:41:22:WARN com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@11d565f -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!2012-11-29 10:41:22:WARN com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@11d565f -- APPARENT DEADLOCK!!! Complete Status: Managed Threads: 3Active Threads: 3Active Tasks: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@3f0b70 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1080f38 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1f5438 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)Pending Tasks: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@d26103com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1df3255Pool thread stack traces:Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]java.net.SocketInputStream.socketRead0(Native Method)java.net.SocketInputStream.read(Unknown Source)oracle.net.ns.Packet.receive(Unknown Source)oracle.net.ns.NSProtocol.connect(Unknown Source)oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:858)oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:268)oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:129)com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:862)com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:33)com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1527)com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]java.net.SocketInputStream.socketRead0(Native Method)java.net.SocketInputStream.read(Unknown Source)oracle.net.ns.Packet.receive(Unknown Source)oracle.net.ns.NSProtocol.connect(Unknown Source)oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:858)oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:268)oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:129)com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:862)com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:33)com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1527)com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]java.net.SocketInputStream.socketRead0(Native Method)java.net.SocketInputStream.read(Unknown Source)oracle.net.ns.Packet.receive(Unknown Source)oracle.net.ns.NSProtocol.connect(Unknown Source)oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:858)oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:268)oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:441)oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:129)com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:862)com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:33)com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1527)com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)

然後串連oracle的工具也打不開，感覺需要重啟oracle服務，但是去伺服器採用Linu命令重啟後就出現【No space left on device 】

[oracle@SERVER233 bin]$ lsnrctl startLSNRCTL for Linux: Version 10.2.0.1.0 - Production on 29-NOV-2012 10:30:23Copyright (c) 1991, 2005, Oracle.  All rights reserved.Starting /oracle10g/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...TNSLSNR for Linux: Version 10.2.0.1.0 - ProductionSystem parameter file is /oracle10g/app/oracle/product/10.2.0/db_1/network/admin/listener.oraLog messages written to /oracle10g/app/oracle/product/10.2.0/db_1/network/log/listener.logError listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))TNS-12549: TNS:operating system resource quota exceeded TNS-12560: TNS:protocol adapter error  TNS-00519: Operating system resource quota exceeded   Linux Error: 28: No space left on device

咋一看貌似，磁碟空間不夠，然後採用命令

 df -i

出現

[oracle@SERVER233 bin]$ df -iFilesystem             Inode (I)已用 (I)可用 (I)已用% 掛載點/dev/sda11           25608192  191904 25416288    1% //dev/sda1            6406144      44 6406100    1% /bootnone                  214052       1  214051    1% /dev/shm/dev/sda10           6406144     212 6405932    1% /home/dev/sda5            25608192      19 25608173    1% /opt/dev/sda2            29949952      12 29949940    1% /sowft/dev/sda9            2562240      60 2562180    1% /tmp/dev/sda8            12812288  305651 12506637    3% /usr/dev/sda6            2562240     991 2561249    1% /usr/local/dev/sda7            6406144 6406144       0  100% /var[oracle@SERVER233 bin]$ df -hFilesystem            容量  已用 可用 已用% 掛載點/dev/sda11            193G   17G  167G   9% //dev/sda1              49G   91M   46G   1% /bootnone                  3.0G     0  3.0G   0% /dev/shm/dev/sda10             49G  135M   46G   1% /home/dev/sda5             193G   93M  183G   1% /opt/dev/sda2             225G  731M  213G   1% /sowft/dev/sda9              20G   77M   19G   1% /tmp/dev/sda8              97G  6.4G   85G   7% /usr/dev/sda6              20G  177M   19G   1% /usr/local/dev/sda7              49G   26G   21G  55% /var

覺得是var目錄佔用空間比較大 然後進入clientmqueue  發現佔用比較大

日誌是定期分析處理的，怎麼會佔這麼大的空間？

查看記錄檔大小
# du -sh /var/log
31M /var/log

好小耶，那到底是什麼檔案佔用了大量空間了？

繼續找。

du -sh /var/spool/clientmqueue/
889M /var/spool/clientmqueue

找到clientmqueue 目錄佔了大量空間。

這個目錄底下的檔案到底是幹嘛的？？

分析：
系統中有使用者開啟了cron，而cron中執行的程式有輸出內容，輸出內容會以郵件形式發給cron的使用者，而sendmail沒有啟動所以就產生了這些檔案；

解決辦法:
將crontab裡面的命令後面加上> /dev/null 2>&1
註：2>&1：把錯誤重新導向到輸出要送到的地方。即把上述命令的執行結果重新導向到/dev/null，即拋棄，同時，把產生的錯誤也拋棄。

rm -rf /var/spool/clientmqueue 刪除這個目錄。

重新修改所有的cron

這樣的話就解決了clinetmqueue佔用空間的問題。

參考網址：http://baozoutianshi.blog.sohu.com/203000776.html