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如何查看Oracle用户的SQL执行历史记录？ - 数据库(内核) - 清泛网 - 专注C/...
...le();
PL/SQL procedure successfully completed.
$ cd $ORACLE_HOME/admin/test/udump
$ ls -lrt
$ tkprof test_ora_2195620.trc report.txt sys=no explain=no aggregate=yes
$ more report.txt --这个文件包括了启停trace之间所有SQL语句的执行信息，执行计划、统计
【...
How to replace multiple white spaces with one white space
...rmalized = NormalizeWithSplitAndJoin(bigString);
var suite = new TestSuite<string, string>("Normalize")
.Plus(NormalizeWithSplitAndJoin)
.Plus(NormalizeWithRegex)
.RunTests(bigString, normalized);
suite.Display(ResultColumns.All, suite.Fin...
Convert absolute path into relative path given a current directory using Bash
...ile1" "$file2"
For example:
$ realpath --relative-to=/usr/bin/nmap /tmp/testing
../../../tmp/testing
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
...
create table test (a int, b int , c int, d int);
alter table test drop column b, d;
Be aware that DROP COLUMN does not physically remove the data, and for fixed length types (int, numeric, float, datetime, uniqueidentifier etc) the spac...
What are the effects of exceptions on performance in Java?
...is already destroys the advantage of a local try block.
See the following test code:
public class Test {
int value;
public int getValue() {
return value;
}
public void reset() {
value = 0;
}
// Calculates without exception
public void method1(int i) ...
Delete topic in Kafka 0.8.1.1
I need to delete the topic test in Apache Kafka 0.8.1.1.
14 Answers
14
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Using Regular Expressions to Extract a Value in Java
.../ create matcher for pattern p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.println(m.group(0)); // whole matched expression...
What is the JavaScript convention for no operation?
...y turn off debug code in my program. In C/C++, I would have used macros. I tested assigning my fn to Function.prototype and timed it, comparing the results to simply having an if statement inside the function to return immediately. I also compared these to the results of simply removing the function...
What is a “batch”, and why is GO used?
...nd or set of commands over and over again. This may be to insert or update test data or it may be to put a load on your server for performance testing. Whatever the need the easiest way to do this is to setup a while loop and execute your code, but in SQL 2005 there is an even easier way to do this...
How can I trigger a JavaScript event click
...n my page. I am trying to automate a number of clicks on the hyperlink for testing purposes. Is there any way you can simulate 50 clicks on the hyperlink using JavaScript?
...