commit error when use mysql

1. create new issue:

Form Errors:
Exception: com.atlassian.jira.exception.CreateException

but the issue has already added!

2. when comment issue:
500 Servlet Exception
org.ofbiz.core.entity.GenericTransactionException: Roll back error, could
not commit transaction, was rolled back instead (all commits rolled back)
at org.ofbiz.core.entity.TransactionUtil.commit(TransactionUtil.java:110)
at com.atlassian.jira.issue.managers.DefaultActionManager.createAction(DefaultActionManager.java:89)
at com.atlassian.jira.issue.managers.DefaultActionManager.createComment(DefaultActionManager.java:61)
at com.atlassian.jira.issue.managers.DefaultActionManager.createComment(DefaultActionManager.java:49)
at com.atlassian.jira.web.action.issue.AddComment.doExecute(AddComment.java:43)
at webwork.action.ActionSupport.execute(ActionSupport.java:108)
at webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:220)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(Unknown Source)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(Unknown Source)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.security.SecurityFilter.doFilter(SecurityFilter.java:208)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.security.LoginFilter.doFilter(LoginFilter.java:194)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.util.filters.ProfilingFilter.doFilter(Unknown Source)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.caucho.server.http.Invocation.service(Invocation.java:311)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:221)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:163)
at com.caucho.server.TcpConnection.run(TcpConnection.java:137)
at java.lang.Thread.run(Thread.java:479)
com.caucho.transaction.RollbackExceptionWrapper: all commits rolled back
at com.caucho.transaction.TransactionImpl.commit(TransactionImpl.java:409)
at com.caucho.transaction.TransactionManagerImpl.commit(TransactionManagerImpl.java:184)
at org.ofbiz.core.entity.TransactionUtil.commit(TransactionUtil.java:104)
at com.atlassian.jira.issue.managers.DefaultActionManager.createAction(DefaultActionManager.java:89)
at com.atlassian.jira.issue.managers.DefaultActionManager.createComment(DefaultActionManager.java:61)
at com.atlassian.jira.issue.managers.DefaultActionManager.createComment(DefaultActionManager.java:49)
at com.atlassian.jira.web.action.issue.AddComment.doExecute(AddComment.java:43)
at webwork.action.ActionSupport.execute(ActionSupport.java:108)
at webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:220)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(Unknown Source)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(Unknown Source)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.security.SecurityFilter.doFilter(SecurityFilter.java:208)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.jira.web.security.LoginFilter.doFilter(LoginFilter.java:194)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.atlassian.util.filters.ProfilingFilter.doFilter(Unknown Source)
at com.caucho.server.http.FilterChainFilter.doFilter(FilterChainFilter.java:88)
at com.caucho.server.http.Invocation.service(Invocation.java:311)
at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:221)
at com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:163)
at com.caucho.server.TcpConnection.run(TcpConnection.java:137)
at java.lang.Thread.run(Thread.java:479)

--------------------------------------------------------------------------------
Resin 2.1.2 (built Tue Jun 11 08:26:56 PDT 2002)

the comment has already added also!

How can I fix it?