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http://www.scarydba.com/2011/06/15/rebind-and-rewind-in-execution-plans/Ever looked at an execution plan? If you answered no, you can ' t possibly has ever tried to tune a query, or, you ' re doing it wrong. For every one else, no doubt you ' ve looked at the tool tips or the property sheets of a operator and you ' ve seen the Rebi nd Rewind Properties and wondered what the heck they mean. Me too.I learned as much as I could for the book on execution

Document directory Use setTimeout to delay function execution Use clearTimeout to cancel an execution plan Develop and cancel repeated execution plans for Functions Use process. nextTick to delay function execution to the next round of the event Loop Congestion event Loop Exit event Loop Use setTimeout instead of setInterval to ensure the serialization of function execution For the list of articles in this series and the translation progres

1. OverviewRole: Used to maintain resource plans, resource usage groups, and resource plan directives, and package dbms_resource_manager_privs is used to maintain permissions related to resource management.2, the composition of the package1), Dbms_resource_manager.create_planRole: Establish a resource planSyntax: Dbms_resource_manager.create_plan (Plan in varchar2,comment with varchar2,cpu_mth in varchar2 default ' emphasis ',active_sess_pool_mth in v

plan, which greatly increases the period of optimization. If you do not want to execute the statement and just want to get an execution plan can take:Sql> Set Autotrace traceonlyThis will only list the execution plan and not the actual execution of the statement, greatly reducing the tuning time. Although statistics are also listed, this statistic is useless because there is no execution of the statement, and if you encounter an error when executing the statement, the workaround is:(1) Under th

Common Methods for viewing Oracle execution plans-Series 2 Continued article: http://blog.csdn.net/bisal/article/details/38919181 3. AUTOTRACE Switch Turn on AUTOTRACE in SQLPLUS to get the SQL Execution Plan. The prompt shows that AUTOTRACE has several options: OFF/ON/TRACEONLY/EXPLAIN/STATISTICS. Lab: 1. Execute set autotrace on: 2. Execute set autotrace traceonly: VcD4KPHA + pgltzybzcm9 "http://www.2cto.com/uploadfile/Collfiles/20140917/201

The following article describes how to use optimizer updates to execute plans in DB2 databases, we all know that in a DB2 database, the optimizer is generally used to analyze SQL statements and generate an Access Plan that is considered optimal ). The DB2 optimizer is actually a set of standard rules. Generally, we only need to tell DB2 what to search, not how to search. So what is the DB2 optimizer used to determine the optimal SQL access path? DB2 o

Without third-party tools, view SQL Execution plans SQL> connect sys as sysdba -- create the table SQL used by the execution plan> @? \ Rdbms \ admin \ utlxplan grants the Autotrace permission to each user by using the following methods. If you need to restrict the Autotrace permission, you can change the public authorization to the specific user authorization. Www.2cto.com 1. grant all permissions to the plan_table table to the public role SQL> grant

Oracle AWR threshold affects the historical execution plan. Some netizens recently mentioned why the historical execution plan of SQL statements cannot be viewed in dba_hist_ SQL _plan. This problem is caused by default, the threshold value set by Oracle does not capture all SQL statements, so it is normal to see some historical SQL Execution plans. In Oracle 9i, we can set different snapshot levels to obtain detailed information of different degrees.

development opportunity. Between the ages of 25 and 32 is the accumulation stage. During this period, they should have performance. If they are successful, they should have the right to return (including monetary return ). Basic quota After the return, it is to solve the family problem and build a family. Some people will try to become "professionals" in this industry ". Therefore, Bai Ling thinks that when she was in her 30 s, she already had a basic career model. Some people have to start the

goal. The long-term goal must also be tied to the intermediate goal. Its level is certainly higher, with a time span of more than five years. In addition, the long-term goal is generally not related to the specific XX language, XX platform, etc., but is often associated with career positions. For example, "become technical director in 5-7 years" and "become product architect in 5 years.　After you have set all three goals, you have formed a personal development plan. Since it is a plan, You Have

Personal plans will never go messy: five timed reminder software for horizontal Evaluation (16:19:57) Category: Work articles Generally, the reminder software is simple and may not be used by everyone. But for users who need to use computers as work tools, a good reminder software will often bring great help to their work and learning. With the help of the reminder software, you don't have to worry about forgetting anyt