java.sql.SQLException: Index file defaultperson.CDX has been locked by another process

java.sql.SQLException: Index file defaultperson.CDX has been locked by another process at com.hxtt.b.al.a(Unknown Source) at com.hxtt.sql.dbf.DBFIndex.a(Unknown Source) at com.hxtt.sql.dbf.i.a(Unknown Source) at com.hxtt.sql.dbf.i.if(Unknown Source) at com.hxtt.sql.a6.a(Unknown Source) at com.hxtt.sql.ah.a(Unknown Source) at com.hxtt.sql.cu.a(Unknown Source) at com.hxtt.sql.a4.a(Unknown Source) at com.hxtt.sql.d1.a(Unknown Source) at com.hxtt.sql.d1.a(Unknown Source) at com.hxtt.sql.de.h(Unknown Source) at com.hxtt.sql.d1.a(Unknown Source) at com.hxtt.sql.by.a(Unknown Source) at com.hxtt.sql.by.a(Unknown Source) at com.hxtt.sql.by.a(Unknown Source) at com.hxtt.sql.am.a(Unknown Source) at com.hxtt.sql.am.if(Unknown Source) at com.hxtt.sql.am.executeQuery(Unknown Source) at com.hxtt.forum.PooledResultSet.(PooledResultSet.java:15) at com.hxtt.forum.PooledConnection.executeQuery(PooledConnection.java:57) at com.hxtt.forum.DatabaseFactory.getPooledResultSet(DatabaseFactory.java:152) at com.hxtt.forum.DatabaseFactory.getPost(DatabaseFactory.java:813) at com.hxtt.forum.ForumManager.getPost(ForumManager.java:400) at _forum._readpost__jsp._jspService(_readpost__jsp.java:181) at com.caucho.jsp.JavaPage.service(JavaPage.java:75) at com.caucho.jsp.Page.subservice(Page.java:506) at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:182) at com.caucho.server.http.Invocation.service(Invocation.java:315) at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135) at com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:346) at com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274) at com.caucho.server.TcpConnection.run(TcpConnection.java:139) at java.lang.Thread.run(Thread.java:595)