Oracle

In the Oracle database how to find those fields containing Chinese data records, sometimes there is such a special need, the following collation of some of the discriminant fields contain Chinese records in several ways1: Judging with asciistr

Rollup Function Application Scenario:　　The main use in the grouping, each group to the total value (that is, subtotal), and finally all values (minus subtotals) sum (is total)Of course, the same effect can be achieved with union. Identify the groups

In the Oracle database environment of their own virtual machine, when tossing and making experiments, do not know what special changes, operations caused from the Sql*plus to start the database instance, reported the following error:Then use startup

1. Description of the problemWhen you log in with PL/SQL, you will be prompted that the " database character set (ZHS16GBK) and client character set (2%) are different, character set conversions can cause unpredictable consequences ", the specific

Recently, some research and analysis on the Oracle database real-time synchronization tool has been done, focusing on LinkedIn's databus and Ali's Yugong two middleware, in which databus need to add additional columns and triggers on each table to

Database stopped:Shutdown normalNo new connectionWait for the current session to endWait for the current transaction to endForce checkpoints and close files (consistent close)Shutdown transactionalNo new connectionEnd Current sessionWait for

--1, View the user's proifle, generally is the defaultSelect Username, profile from dba_users; --2, view profiles (default ) Password expiration setting Select * fromDba_profileswhere profile= ' DEFAULT ' andResource_name= ' Password_life_time ';--3

Requirements: To find the largest line of Frecamount information in Fsendccname Group;Solution 1:SELECT T0. Fsendccname,t0. FrecccnameFrom tmp0ce8366758a811e781d70050568 T0INNER JOIN(SELECT fsendccname, MAX (frecamount) frecamountFrom tmp0ce8366758a8

After logging in to Linux, go to the Oracle installation directory and locate the bin directory and go to the bin directory.Ls-l look at the owners of these commands:Su-oracleThis will enter the user's home directory/home/oracle,At this point, you

I. NAVICAT Connect Oracle ERROR:Workaround:1. Download the Oracle client first, Win64_11gr2_client.zip,:http://www.oracle.com/technetwork/database/enterprise-edition/downloads /112010-win64soft-094461.html2. After the download, open Navicat, select

Develop the platform with idea and write directly in the POM dependency> groupId>com.oraclegroupId> artifactid>ojdbc14artifactid> version>10.2.0.1.0version> Dependency> Discover the Automatic download can not download

--View the lock table process SQL statement 1:SELECT Sess.sid, sess.serial#, lo.oracle_username, lo.os_user_name, ao. object_name , lo.locked_mode fromWHERE ao. object_id= lo. object_id and = Sess.sid;OrSELECT

See deterministic many times, have been very puzzled, today did an experiment.We cheat Oracle to say it is a deterministic function, which is called only once in SQL.Assume that deterministic is not used . The values you can see are different. after

Create or Replace procedure imp_person_medical (V_t_table_name varchar2,v_result out varchar2) as/**Parameter: V_t_table_name TEMP Data Sheet*/V_sql VARCHAR2 (2000);V_error_count number;Begin----End Imp_person_medical:There is no difference between

NVL2 (EXPR1,EXPR2,EXPR3): Memory, Nvl2 (), EXPR1 is null, 2 is the 2nd number (that is, EXPR3) returned function: If the parameter expression EXPR1 value is null, the NVL2 () function returns the value of the argument expression EXPR3 If the

Create a student tableCreate a score tableCreate a teacher tableCreate a grade Table--1, Query the sname, Ssex, and class columns of all records in the student table. SELECT S.sname, S.ssex, S.classFrom student S--2, query teachers all units that

1. Windows Find ORACLE installation directory: hkey_local_machine/software/oracle/key_oradb11g_home12. View Current user permissionsSelect from Session_privs;3. View the default tablespace for the current userSelect from User_users;4. View the

　　When the data is very large, for example, to query id　　Table partitioning has the following advantages:(1) The possibility of data corruption is reduced due to the spread of data across regions.(2) The data can be backed up and restored to a

Oracle has provided support for EF6 at the end of 2014. Previously only supported to EF5. EF6 has many useful features that are worth upgrading. Here's how to support OracleI. Oracle provides some basic knowledge about. NET Support.1. In the early

-- Check the job's next execution time and time intervalSELECT * from dba_jobs where job = ' 774 ';-- Start JobEXEC Dbms_job.run (774);--Deactivate jobEXEC Dbms_job. Broken (job#,true);EXEC Dbms_job. Broken (774, TRUE);--See how many job executions