Oracle

Install oracle SQL developerAfter Oracle win64_11gR2 is installed on 64-bit Windows 7, Oracle automatically installs Oracle SQL Developer, such as www.2cto.com.When starting Oracle SQL Developer, you must first select the jdk installation path;What

Check whether the number of existing processes in the database has reached the processes parameter -- select count (*) from v $ process; to obtain the current number of processes in the database. -- Select value from v $ parameter where name =

Oracle_11g table + perfect data migration to 10g solution 1. Use imp/exp to perfectly migrate 10g (Table + data) to 11g, everyone on Earth knows. GB (Table + Data) migration to 10 Gb is perfect. solution 1: on the 11 GB server, use the expdp command

Oracle timer simple operation first create a test table: SQL code create table JOBTEST (ID VARCHAR2 (50) primary key, NAME VARCHAR2 (20), AGE NUMBER (3 )) then write the stored procedure to be called by the Timer: SQL code create or replace

Oracle index monitoring reasonably creates strategic indexes for database tables, which greatly improves query performance. But in fact, the index we create in daily life is not a strategic index. It is precisely because a large number of redundant

Oracle stream does not synchronize sequence value changes. How to solve this problem? oracle stream can synchronize sequence creation and changes, but does not synchronize sequenceFor example, a_seq.nextval is not executed in the backup

Oracle-Import datapump errors I got below errors when I was doing datapump import for oracle database today. [html] impdp 'xeuser/password @ xe 'directory = datadump schemas = xeuser dumpfile = BACKUP. DMP logfile = impdp. log... ORA-39002: invalid

Oracle table analysis description 1. Table analysis concepts 1. Simply put, information about tables and indexes is collected. The CBO (SQL Optimizer) determines the optimal SQL Execution path based on the information. Through table analysis, you

Stored Procedure creation Syntax:• Create [or replace] procedure procedure_name• [(Argment [{in | in out}] type,• Argment [{in | out | in out}] type• {Is |}• • (Note: declare statements are not required)• Begin• • Exception• • End; Stored Procedure

Create or replace procedure P_114_SEARCHNT (o_Cursor Out sequence, I _Begindate In varchar2, -- start time I _Enddate In varchar2, -- end time I _citycode In varchar2 -- Address Code) /*************************************** * *** function: author:

Oracle queries the structure and data of all the date test tables at two times in a record as follows: id rate start_date end_date 1 0.8 2013-02-01 2013-02-15 2 0.6 2013-02-16 2013-02-28 3 0.4 2013-03-01 2013-03-10 find all dates and corresponding

After the computer name is changed, Oracle cannot start the problem properly. The solution has found a lot of information on the Internet, but none of them can solve my problem completely. The following is an example, for your reference (my Oracle

Oracle changed the field type from number (2) to number (2, 1). This afternoon, when I did something myself, I found a small problem. When I created a data table, the course_credit field of course is set to the number (2) type, which leads to the

Oracle changes the default port start listener [oracle @ localhost ~] $ Lsnrctl start stop listener [oracle @ localhost ~] $ Lsnrctl stop Step 1: Modify the Oracle port. stop the listening service Step 2: Modify the listener. ora and tnsnames. ora

Oracle undo tablespace is full. 1. Start SQLPLUS and log on to the database with sys. # Su-oracle $> sqlplus/as sysdba 2. Find the UNDO tablespace name of the database and determine the UNDO tablespace used by the current routine: Show parameter

Oracle --- basic SQL statement QueryI. Basic SELECT statementsSelect * from table name;Slect field name from table name;SELECT identifies which columns to SELECT.FROM identifies FROM which table to select.Ii. NotesThe SQL language is case

Examples of views, sequences, and simple paging in oracle Use join on to join and group by to query multiple tablesCreate ViewDescription View StructureDESCRIBE view nameModify View:Create or replace view empv(Id_number, name, sal, department_id)As

When creating an ORACLE int number table, if it is a floating point number, it is generally set to number (m, n) [m is precision, n is decimal place, so the integer is m-n], set the integer to integer. For example: create table abc (a number (), B

Oracle trigger 6-manage trigger Oracle trigger 5-Instead of trigger http://www.bkjia.com/database/201304/203344.html 1. disable, enable, and delete trigger alter trigger trigger_name disable; alter trigger trigger_name enable; drop trigger

The current system insertion time for Oracle, Db2, SqlServer, and MySQL databases. For example, a table has two fields in the table: name and makedate 1. oracle: The system insertion time should be sysdate: insert into table (name, makedate) values (