Oracle

1. Installation and operating environment# yum Install gcc-c++Note: Both gcc-c++ and Libstdc++-devel will be installed at this time.2. See if the g++ is installed successfully[[Email protected] Desktop]# g++-VUse built-in specs.Target: X86_64-redhat-

2015-11-10View Total tablespace capacitySelect sum / 1024x768 / 1024x768 as from Group by Tablespace_name;View Table Space usageSELECTA.tablespace_name,total,free, (total-FREE), total/(1024x768*1024x768*1024x768), free/(1024x768*1024x768*1024x768)

Turn http://www.cnblogs.com/252e/archive/2012/09/13/2682817.htmlQuery and delete duplicate records of SQL statement 1, find redundant records in the table, duplicate records are based on a single field (ID) to determine the select * from table where

BLOBs and Clob are large field types, blobs are stored as binary, and CLOB can store text directly. The two are interchangeable, or you can use LOB fields directly instead of the two. But in order to better manage the Oracle database, usually like

Oracle Database InstallationNote: ORCL, the installation process designated Sys,system and other related account password The Scott account has four commonly used tables, you can use the system or SYS as a sysdba in, alter the user Scott account

The first step, bat script:@echo offecho Delete the spare files and logs from 10 days agoforfiles/p "Z:/back"/M *.dmp/d -10/c "cmd/c del @path"forfiles/p "Z:/back"/M *.log/d -10/c "cmd/c del @path"Echo is backing up the Oracle database, please wait

8 seconds to add 20,000 data in bulk. try { String url = "Jdbc:oracle:thin: @IP: 1521:ORCL"; //ORCL is the SID of the database String user = "Oracle"; String password = "Oracle"; StringBuffer sql = new StringBuffer (); Sql.append

Continuous digital segmentation is required in OracleSimulation data:Fphm JE1001 201002 301003 121005 321006 331007 881009 991010 111011 11As shown in the data, there is an interruption in the middle of the invoice number (FPHM) and we need to

Oracle CREATE TABLE space SYS users log in as DBA under CMD: Play Sqlplus in cmd/Nolog and then Conn ./ asSYSDBA--to create a path if the path does not exist--Create a temporary table spaceCreate Temporarytablespace txwh_temp

Create a stored procedure:Create or replace procedure proc_trade (   v_tradeid in tt_ b.number%type,                         --Trading id   v_third_ip in tt_b.varchar2% type,                      --Third party ip   v_third_time in tt_b.date%type ,  

[Email protected] ~]$ lsnrctl status Lsnrctl for linux:version 11.2.0.1.0-production on 06-oct-2015 21:10:05 Copyright (c) 1991, Oracle. All rights reserved. Connecting to (Description= (address= (PROTOCOL=IPC) (key=extproc1521)))STATUS of the

Connect to the remote CDB and prepare the remote PDB for cloning.Select from V$pdbs; con_id DBID NAME open_mode------------------------------------------------------------ 2 1258043702 pdb$seed READ only

[Email protected] admin]$ CD $ORACLE _home/network/admin[email protected] admin]$ cat Tnsnames.ora# Tnsnames.ora Network Configuration File:/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora# Generated by Oracle configuration

Parsing Oracle's RowNumFor rownum It is the number of the Oracle system order assigned to the rows returned from the query, the first row returned is assigned 1, the second row is 2, and so on, this pseudo field can be used to limit the total number

Differences and exercises between rownum and row_number () in oracle databases, rownumrow_number It is clear that for rownum, it is the number of the row returned from the query that is sequentially allocated by the oracle system. The first row is

Oracle oradebug command usage1> what commands are available for oradebug? Log on to the database as sysdba, you can see the Common commands sqlplus/as sysdba oradebug help 2> tracking the current session information oradebug setmypid -- tracking the

Oracle learning records: use custom functions and triggers to dynamically generate primary keys. I wanted to write Oracle functions and triggers for a long time. A recent example from a textbook gave me this opportunity. Now, I have recorded what I

Atitit. database partition design attilax summary, atititattilax Atitit. database partition design attilax Summary   1. Partitioning is a dedicated folder (what) 1 2. Benefits of partitioning (y) 1 3. partition principle (whether to partition or

[Oracle] oracle functions-numeric functions, oracle function values I. Numeric Functions 1. mod (m, n) Evaluate the remainder Function NOTE: If m or n is null, null is returned. If n is 0, the value of m is returned. Eg: 2. round (m [, n ])

Oracle tree query start with connect by, oracleconnect I. IntroductionIn oracle, start with connect by (prior) is used to query data in a tree structure. Here, start with conditon gives the range of data searches, and connect by gives the conditions