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MaxOpenPreparedStatements limit reached exception while migrating to MySql

Question asked by pradeepsimha on Mar 27, 2014
Latest reply on Mar 27, 2014 by pradeepsimha
Hi,

I am trying to change the database of Alfresco to MySql and I followed the steps mentioned here: http://docs.alfresco.com/4.1/index.jsp?topic=%2Fcom.alfresco.enterprise.doc%2Ftasks%2Fmysql-config.html but when I try to start the service I am getting below error:



### Cause: java.sql.SQLException: MaxOpenPreparedStatements limit reached
; uncategorized SQLException for SQL []; SQL state [null]; error code [0]; MaxOpenPreparedStatements limit reached; nested exception is java.sql.SQLException: MaxOpenPreparedStatements limit reached
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Caused by: java.sql.SQLException: MaxOpenPreparedStatements limit reached
   at org.apache.commons.dbcp.PoolingConnection.prepareStatement(PoolingConnection.java:109)
   at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:281)
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Caused by: java.util.NoSuchElementException: Pool exhausted
   at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1130)
   at org.apache.commons.dbcp.PoolingConnection.prepareStatement(PoolingConnection.java:107)
   … 101 more


Service starts from Windows, but if I see the tomcat logs, it is just stuck here:


INFO: Deploying web application archive C:\Alfresco\tomcat\webapps\alfresco.war
Mar 27, 2014 12:28:01 PM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: http://java.sun.com/jsp/jstl/core is already defined
Mar 27, 2014 12:28:02 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext


If I try to hit url in browser, it keeps on saying "Waiting for localhost.." nothing gonna come.

This is my content related to alfresco-global.properties


db.driver=org.gjt.mm.mysql.Driver
db.url=jdbc:mysql://${db.host}:${db.port}/${db.name}?useUnicode=yes&characterEncoding=UTF-8

db.name=alfresco
db.username=alfresco
db.password=alfresco
db.host=localhost
db.port=3306
db.pool.max=400


Can someone kindly help me? What maybe the cause of this exception. All these were working fine when I try to use default database, but suddenly got this exceptions when I try to migrate to MySql.

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