trace

I am new to oracle database. Can someone give me an example of the steps for how to see the last statements executed on the Oracle database 11g r2? You can use the below query to get the last sql executed based on last sql which was active in database select ltrim(sq.sql_text) from v$sql sq, v$session se, v$open_cursor oc where sq.sql_id = oc.sql_id and se.saddr = oc.saddr and se.sid = oc.sid and se.audsid = SYS_CONTEXT('userenv', 'sessionid') order by oc.LAST_SQL_ACTIVE_TIME desc; johnm Find all sql where sql is like .... select h.sample_time , u.username , h.machine , s.sql_text , h.* from

2009-10-30 @ taobao 引言 别名 虚拟列 IN INNER JOIN 分号字符 Insert Merge IS [NOT] NULL 引言 HiveQL非常像SQL，但二者并非等价，若不注意期间的一些差异，容易导致HiveQL的语义错误，或降低运行效率等问题。本文将逐步汇集HiveQL应用中发现的差异，整理与此以便查阅。更多HiveQL的语法知识见 http://wiki.apache.org/hadoop/Hive/LanguageManual 别名 SQL中对列取别名，可如下应用： SELECT user_type type FROM s_auction_auctions; 但Hive解析上述语句时，会提示： FAILED: Parse Error: line 1:7 cannot recognize input 'user_type' in select expression 此时，应改为： SELECT user_type AS type FROM s_auction_auctions; 虚拟列 Hive中有个"虚拟列"的概念，此列并未在表中真正存在，其用意是为了将Hive中的表进行分区(partition)，这对每日增长的海量数据存储而言是非常有用的。为了保证HiveQL的高效运行， 强烈推荐在where语句后使用虚拟列作为限定 。拿web日志举例

I'm not very experienced with SQL Server Profiler (2005, 2008). I'd like to print some info to a trace from a stored procedure. PRINT statements don't seem to output to my trace. How can I easily get the PRINT statements to output to the trace? If that's not what trace (or PRINT) is really meant for, what's a quick easy alternative? You could use sp_trace_generateevent to "fire" an event out to your SQL trace. There's an example of it on the BOL page for the proc: http://msdn.microsoft.com/en-us/library/ms177548.aspx Alternatively you can put a print statement into your stored procedure and

I am looking for a simple native .NET error logging solution. I am not interested in using log4net, Elmah or any other logging library. Below is what I am planning on using. My question is performance on my site is paramount and does this flow introduce any performance concerns? Global.asax protected void Application_Start(object sender, EventArgs e) { GlobalFilters.Filters.Add(new HandleExceptionsAttribute()); } Handle Exceptions Attribute: public sealed class HandleExceptionsAttribute : HandleErrorAttribute { private void TraceError(Exception _this) { Trace.TraceError("{0} Exception {1}",

I have a strange bug in python code which only happens sometimes in CI. We can't reproduce it. Where is the test code: response=self.admin_client.post(url, post) self.assertEqual(200, response.status_code, response) Sometimes we get a 302 which happens since the form gets saved. My idea to debug this: with some_magic_trace.trace() as trace: response=self.admin_client.post(url, post) self.assertEqual(200, response.status_code, trace) The trace should contain the python lines (filename, line offset, line as string) executed by the interpreter. How to implement some_magic_trace.trace() ? The

I am trying to follow the instructions on this page to create a trace file. I can see the file in File Explorer in DDMS and can pull it onto my PC but it is zero bytes long. Any suggestions as to what I might be doing wrong, please? The problem seems to have been that the stopMethodTracing() call which I had put in the onDestroy() method (as suggested in the Dev Guide ) failed to stop the tracing even though I had tried three different means of ending the activity ... rotating the screen, pressing the Home Key and using Taskiller to kill the app. By moving the stopMethodTracing() elsewhere I

To temporarily edit the body of a packaged function func , I frequently use trace(func, edit=TRUE) . For some reason, though, R isn't letting me do this when func is [.data.table : ## Note: In this and the other cases below, once an editor pops up, I save and ## and then exit without making any edits to the function. The commented-out ## message below each call to trace() is what is then printed to my R console. trace("[.data.table", where=data.table, edit=TRUE) # Error in .makeTracedFunction(def, tracer, exit, at, print, doEdit) : # the editing in trace() can only change the body of the

I am trying to understand how does Tracing works I have created a simple new web project. This is my code that I can using // Create a trace listener for the event log. EventLogTraceListener myTraceListener = new EventLogTraceListener("myEventLogSource"); // Add the event log trace listener to the collection. Trace.Listeners.Add(myTraceListener); // Write output to the event log. Trace.WriteLine("Test output"); I am taking help from this msdn link The settings in my web.config is as follows <system.diagnostics> <trace autoflush="false" indentsize="4"> <listeners> <add name="myListener" type=