On Apr 2, 2013, at 8:15 AM, Tomasz Kowalczewski wrote: > Hello all, > > we are running Tomcat 7 on Amazon EC2: > > Server version: Apache Tomcat/7.0.22 > Server built: Sep 27 2011 09:40:50 > Server number: 7.0.22.0
As you can see from the date, this version is getting to be pretty old. You should consider upgrading. > OS Name: Linux > OS Version: 2.6.34.7-56.40.amzn1.i686 > Architecture: i386 > JVM Version: 1.7.0_03-b04 > > And get following exception on slow queries: > > [catalina-exec-18] 04-02 10:27:11 ERROR TransactionInterceptor:414 - > Application exception overridden by rollback exception > java.lang.NullPointerException > at > org.apache.tomcat.jdbc.pool.interceptor.SlowQueryReport.reportFailedQuery(SlowQueryReport.java:86) > at > org.apache.tomcat.jdbc.pool.interceptor.AbstractQueryReport$StatementProxy.invoke(AbstractQueryReport.java:237) > > I wasn't able to google for a solution/bugfix therefore I would like > to ask the Tomcat community for help on this issue. Is this a known > bug? There are a couple NPE's reported here. Could be what you are seeing… https://issues.apache.org/bugzilla/show_bug.cgi?id=51582 Probably would be best if you could upgrade to the latest release and see if the problem still continues. If you can't upgrade Tomcat, at least upgrade the jdbc-pool jar. Dan > > When looking at the source code: > > 85: QueryStats qs = this.getQueryStats(sql); > 86: qs.failure(delta, now); > > It looks like getQueryStats(sql) returned null and indeed it does so > on at leas one ocassion: > > protected QueryStats getQueryStats(String sql) { > if (sql==null) sql = ""; > ConcurrentHashMap<String,QueryStats> queries = > SlowQueryReport.this.queries; >>> if (queries==null) return null; > > However, non of the uses of getQueryStats() in SlowQueryReport guard > against this null. It seems to be a bug. > > -- > Regards, > Tomasz Kowalczewski > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
