Oracle

In a Linux system, after the Oracle database service is installed, it is not as if it were under the Windows system, and the Oracle service starts automatically with the system startup by default. Linux system, it is necessary for users to manually

First, RLWARP installationDownload: Http://rpmfind.net/linux/rpm2html/search.php?query=rlwrapDownload the corresponding version, such as: rlwrap-0.42-1.el7.x86_64.rpmRPM-IVH rlwrap-0.42-1.el7.x86_64.rpmAlias sqlplus= ' Rlwrap sqlplus 'Second, set

1. Table space-related SQL--Create a tablespace named Test_tablespace_name with a storage location of D:\db\oradata\orcl\test_tablespace_ NAME.DBF, size 128m, unlimited, after each increase of 10mcreate tablespace test_tablespace_name datafile " d:

　　There are two ways to recover from SCN and timestamp.I. Recovering deleted and committed data through the SCN Querying the current SCN Select from v$database　　 Narrow the scope to query Queries the current SCN to 145437

Baotou as TYPE out_cursor is REF cursor; procedure alarm_contentsbytime ( p_starttime ---- start time p_ EndTime ---- end time in out

Oracle Spatial is composed of a lump of object data types, type methods, operators, functions and processes. A geographic object is stored as a Sdo_geometry object in a field in the table. Spatial indexes are established and maintained by Common DDL

ExportEXP username/password file= file name. DMP Full=y;ImportIMP username/password file= file name. DMP Full=y;Things to be aware of when using EXPDP and IMPDP:Exp and IMP are client tool programs that can be used either on the client or on the

Usage of LibraryCache in OracleSharedPool,1. Shared Pool CompositionThe Shared Pool is composed of multiple intervals (Extent), which are composed of multiple consecutive memory blocks (chunks). These memory blocks are of different sizes. From the

Oracle Database paging Stored Procedure explanation, oracle paging Stored ProcedureOracle Database paging stored procedures.Create or replace package FY_PAGEIS? ? ? -- Declare a cursor? ? TYPE CURSOR_PAGE is ref cursor;END;-- Paging Stored

Oracle Database media recovery process parsing, oracle Media Resolution of the Oracle database media recovery process. SQL * Plus: Release 12.1.0.2.0 Production on Sunday January 7 15:06:03 2018 Copyright (c) 1982,201 4, Oracle .? All rights

Using OCCI to connect to the Oracle database on windows, occioracle In this section, we try to use OCCI to connect to the Oracle database on windows. Oracle C ++ CallInterface (OCCI) is an application programming interface provided by Oracle. It

The oracle string intercepts substr, instr, and substrinstr. The position is from1StartSubstr ("ABCDEFG", 0); // return: ABCDEFG, intercepting all characters Substr ("ABCDEFG", 1); // return: ABCDEFG, intercepting all characters Substr ("ABCDEFG",-0)

How to install Oracle12C in CentOS After using Oracle11g R2 to install it in centos, the system does not start the desktop when it is started, which saves resources and forces the installation. Later, the system was reinstalled, and a lot of things

Explain Oracle subquery instances and explain Oracle subinstances Basic Content of Oracle: subqueries (Single Row, any, all). subqueries can contain SELECT statements in SELECT, UPDATE, and DELETE statements. The results of an internal SELECT

Summary of Oracle composite index and null index usage, oracle Summary Yesterday, I discussed an SQL Optimization Problem in the QQ group. The statements are roughly as follows: Select A, min (B) from table group by A; -- A and B do not have the not

Oracle databases often prompt a solution to the 27102 out of memory problem, oracle27102 There are many solutions on the Internet, but I can't understand either of them. I don't know what the writing is, why can I solve the problem in one sentence?

Use of OracleJob (scheduled execution), oraclejob execution When using OracleJob (scheduled execution), what jobs in oracle can do for you is to execute the stored procedure in the specified time format and regularly execute a task. The following

Use the dbms_job package to create an Oracle scheduled task, and dbms_job to create an oracle In the Oracle package, a package named DBMS_JOB is used to arrange and manage job queues. Through job queue, Oracle databases can regularly execute

The orderby sorting method that uses multiple conditions. Select * from time order by location, date ;? Explanation: Data in the second field is sorted only when the location value is the same. The default value is asc. Then I thought about it

Oraraw to varchar2, encountered ora-29275 problems and solutions, varchar2ora-29275 Environment: Oracle 11g Pl/SQL dev 12 Objectives: Convert the raw type to the varchar2 type. Operation: In general, we utl_raw.cast_to_raw ([varchar2]); --