Oracle

This article is intended to instruct project personnel to extract the AWR reports of Oracle databases themselves.1. The AWR report extraction for the current connection instance:@?/rdbms/admin/awrrptSql> @? /RDBMS/admin/awrrpt CurrentInstance~~~~~~~

Operator optimizationIn operatorThe advantages of SQL in write are easier to write and easy to understand, which is more suitable for modern software development style.But SQL performance with in is always lower, and the steps taken from Oracle to

Oracle initialization or shutdown in progress this error message when you log in to Oracle today, searching the web, trying out a lot of ways, and finally combining several methods to successfully conquer the problem! cause : I mistakenly delete a

Application Scenarios:According to the keyword query similar to this keyword information, some of the keywords to exclude such as: "Limited", "limited liability Company", "Co., Ltd.", need to create an exclusion thesaurus table;First step: Thesaurus

DeclareV_col1 varchar2 (254);V_col2 varchar2 (254);V_sql VARCHAR2 (1024);Type my_cursor is REF CURSOR;V_cur My_cursor;BeginV_sql: = ' select:1,:2 from dual where 1 =: 3 ';Open V_cur for V_sqlUsing ' col1 ', ' col2 ', 1;LoopFetch V_curinto V_col1,

--Create TABLE spaceCreate Tablespace MySchoolDataFile ' d:/ms.dbf 'Size 50M--Create UserCreate user t87 identified by t87;--Grant permissions (Dba,connect,resource)Grant Connect,resource to t87;--Revoke permissionsRevoke Connect,resource from t87;--

The requirement is to export the data in database A as a *.dmp file, and then import the *.dmp file into database B. 1. Export Database A   in the cmd window, enter the following command:Export all databasesEXP User name/password @ database name

Invalid when querying against incoming parameters in Oracle stored procedureEnvironment: oracle11gRequirements: Query the relevant data based on the parameters passed in as criteriaProblem: Invalid conditionCode:Create or Replace procedure XXX

--Confirm Current CDB Sql> select name,cdb from V$database; NAME CDB------------------------ORCL YES --Query the current PDB basic information Col pdb_name for A30select Pdb_id,pdb_name,dbid,status,creation_scn from Dba_pdbs;select

1. List the names of all employees and their immediate superiorsSelect a.ename,a.mgr,b.ename,b.empno from emp a,emp b where a.mgr=b.empno (+);2. List the name of the department and the employees of those departments, together with the departments

Create table spaces and user names/* Step 1th: Create a data table space */Create Tablespace FLXLoggingDataFile ' E:\oracle\product\10.2.0\oradata\orcl\flx.dbf 'Size 50mAutoextend onNext 50m maxsize 20480mExtent management Local;/* 2nd step: Create

Oracle Dynamic Cursor Declarev_col1 varchar2 (254); v_col2 varchar2 (254); v_ SQL varchar2 (1024); type my_cursor is ref cursor; v_cur my_cursor; beginv_ SQL: = 'select: 1 ,: 2 from dual where 1 =: 3'; open v_cur for v_sqlusing 'col1', 'col2', 1;

How to export an Oracle database from a server to a local Oracle Database: oracle Database 1. Import the Oracle database on the server to the local Run the following command in CMD mode: Exp username1/password @ Server database file = Local Hard

Oracle job process solves the problem of no automatic execution It's easy to create a job. Here we mainly talk about the problem that the job is not automatically executed according to the specified time.Solution: 1. Run the job Begin

How can I retrieve the password entered by the system user of oralce? Met the ORA-28000: how to unlock theaccountislocked? The Oracle software installed a few months ago suddenly forgot the password you set. Today, I checked how to retrieve it.

Oracle local database connection* ****************** Create a tablespace and User Name/* Step 2: create a data table space */Create tablespace flxLoggingDatafile 'e: \ oracle \ product \ 10.2.0 \ oradata \ orcl \ flx. dbf'Size 50 mAutoextend onNext 5

Oracle Stored Procedure record in project-common syntax memoOracle Stored Procedure record in project-common syntax memo   You need to write an oracle stored procedure in the project. You need to collect a complex query (involving multiple tables)

Oracle Development Environment ConstructionI. software preparation address: installation package on the oracle Official Website: because of personal learning, you can install the server without a client. A total of two compressed files are extracted

Use OracleRac11gR2's new feature renamedg to change diskgroupnameEnvironment Description: AIX7.1 + dual-node Oracle Rac 11.2.0.3Because this Rac is not installed by your own department, it is installed by the Development Department and is now

Spoon kettle fails to connect to the database. Solution: spoonkettle Driver class 'oracle. jdbc. driver. OracleDriver 'could not be found, make sure the 'oracle' driver (jar file) is installed.Oracle. jdbc. driver. OracleDriver I just downloaded