Oracle

With TMP1 as (SelectT. " ID ",T.username,T.productid,T.operateid,T.normalids,T.operatetimeFrom Trsaaa_statisticripedata tLeft join Idsuser T2 on T.username=t2.usernamewhere T.operatetime To_date (' 1970-01-01 ' | | Tz_offset (Sessiontimezone), '

Oracle 10g installation under win7x64:The first time directly double-click Setup, Error ...May be a compatibility issue, so try right-clicking on the Setup--> Property---compatibility--and check the "Run this program in compatibility Mode" checkbox,

The first thing to look at is whether your Oracle optimizer is using RBO or CBO,(1) If Rbo is used, it will be carried out in the order of the rules.(2) If you are using a CBO, you can modify it using the Hint method.Syntax:SELECT/*+ Index (table

The steps for Oracle to modify the table space that the user table belongs to are modified using scripts. As far as we know, it is necessary to modify the length ofthe space of the tableAndThe index space of the table, if it involves the table of

1. Format the stored procedure establishes:Create or replace procedure My_procedure isBegin--Execution part (function content);End/Example: (Take HR table for example)Create or replace procedure Insert_procedure isBeginINSERT into JOBS values ('

i do not have much time to use Oracle, but I have accumulated some lessons in the project to make it easier for me and others to solve similar problems. 1.temp space exceeds the limit problemProblem Scenario:in the complex ETL query, sometimes a

@echo offSetlocal enabledelayedexpansionTitle%date%%time:~,8% by Liaoning Sunray Software Technology :: XXX Database backup:: Define Database SIDSet SID=ORCL :: Define user an array groups (spaces separated by each user for example: User1 user2 User3

1. In Oracle, the stored procedure consists of three parts: the definition section, the execution section, and the Exception handling section (that is, the exception)EG1: Enter the employee number to inquire about the employee's name and

Enter the system,Enter the system, # su Oracle $cd $ORACLE _home $./sqlplus/nolog >connect/as sysdba; >show parameter SGA; (View memory usage) NAME TYPE VALUE --------------------------

1. Installation dependenciessudo yum install binutils compat-libstdc++-33 compat-libstdc++-33.i686 elfutils-libelf elfutils-libelf-devel gcc gcc-c+ + glibc glibc.i686 glibc-common glibc-devel glibc-devel.i686 glibc-headers ksh libaio libaio.i686

Tabular Space SizeSelect Upper (f.tablespace_name) "Table space name",D.TOT_GROOTTE_MB "Table space size (M)",D.tot_grootte_mb-f.total_bytes "used Space (M)",To_char (Round ((d.tot_grootte_mb-f.total_bytes)/D.TOT_GROOTTE_MB * 100, 2), ' 990.99 ')|| '

Today I see a lot of SQL using with, developers in order to clear the logic, some of the result set first with the cache, there are many places to use the result set, the original SQL needs to execute 2 hours. The optimization method is to put the

Data dictionary1, the Dynamic Data dictionary is a data dictionary starting with v$xxx, about 150 in the database, these data dictionaries reflect the dynamic state of the database, at different times the query will get different results.2. DBA data

In command-line mode, enter Sqlplus/nolog, carriage returnAt this point the interface will show Sql>, and then enter Conn/as SYSDBA;Create a temporary table spaceCreate temporary tablespace test_temp tempfile '/home/app/oracle/oradata/test/test_temp.

Create user syntax:Create user usernameidentified by password;Em:create User WANGWCidentified by Tiger;To modify the user password syntax:Alter user usernameidentified by password;Em:Alter user WANGWCidentified by Rezin;Delete User syntax:Drop user

Oracle simple column-to-row The requirement is to count the total salaries of different jobs in each department. SQL> select deptno, ename, job, sal from emp; deptno ename job sal ---------- -------- --------- ---------- 20 smith clerk 80030 allen

The Oracle11g system automatically collects statistics.--- 11 GB is from Monday to Friday-Saturday-SELECT w. window_name, w. repeat_interval, w. duration, w. enabledFROM dba_autotask_window_clients c, dba_scheduler_windows wWHERE c. window_name = w.

A solution for too many Time_Wait problems in oracle and c3p0 databases ., The project is in the B/S mode and is placed on the linux server. tomcat and oracle11g are on one server. tomcat adopts the C3P0 connection pool for reading the database,

Installation and configuration of oracle11g database under Win7, win7oracle11g1. Download the installation package Download downloads from the oracle official website (you need to register an account for the first download ). Download the 64-bit

Index usage mode For some large SQL statements, most tuning scenarios have the feeling of being cool-fed. If the data is screened by millions or tens of millions, full table scan is an extremely resource-consuming process. However, if an index scan