Oracle

How to find similar records in the database [problem] There are a large number of duplicated data entries in the business system due to preliminary design reasons, and the names of repeated entries need to be removed now.However, these names are

Task Plan-RMAN Delete expired backup crontab-l www.2cto.com Crontab code oracle @ ntsmshost :~ $ Crontab-l # m h dom mon dow command 20 1 ***/data/scripts/shell/expdp_ntsmsall2.sh 01 1 ***/data/scripts/shell/rmn_del_obsolete.sh vi/data

The number of active cursor cursqueries SQL [SQL] www.2cto.com select allcursor all cursors, MYALLCURSOR my cursnumber, myopencursor I open cursnumber, MYCACHECURSOR my SESSION cache cursnumber, (MYALLCURSOR-MYOPENCURSOR-MYCACHECURSOR) Number of my

Oracle tablespace query and operations 1. query the usage of oracle tablespace www.2cto.com select B. file_id File ID, B. tablespace_name tablespace, B. file_name physical file name, B. total bytes, (B. bytes-sum (nvl (. bytes, 0) used, sum (nvl (.

Oracle caller and definer permissions 1. In the first case, the owner or definer of the PL/SQL program reserves all permissions for program execution. You can use the authid definer keyword in the nameprogram www.2cto.com header to enable any user

Oracle constraints and index constraints www.2cto.com constraints include: not null, unique, primary key, foreign key, check not null (non-null). If not null is defined on the column, when inserting data, you must provide the data unique (unique)

You do not need to set the expiration time of the Oracle 11G account during the development process. Www.2cto.com 1. Check the user's proifle, which is generally default: SELECT username, profile from dba_users; 2. Check the password validity period

Oracle10g backup set Compression new feature (Backupset Compression) Oracle10g allows you and the BACKUP command to compress the BACKUP set using the as compressed backupset statement. This compression backup does not need to be decompressed during

 1. Usage description the dbms_xplan package is used to display the execution plan. The execution plan is stored in the Schedule, database cache, and AWR. dbms_xplanThe package can extract the execution plan from these locations, format it, and

Oracle: bitmap index and deadlock-2 The bitmap index is stored as a compressed index value, which contains a ROWID in the range, therefore, ORACLE must lock the ROWID in all ranges for a given value. Row-level locking is not supported. Another

The problem is as follows:Www.2cto.comActual test conditions: -- create table G_PRODUCT_REL (PRODUCT_ID NUMBER not null, -- Business id PC_ID NUMBER not null -- business category id) SELECT 'insert INTO G_PRODUCT_REL (PRODUCT_ID, PC_ID)VALUES ('| G.

The configuration file sqlnet. ora/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet. ora listens to www.2cto.com/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.

Oracle configuration catalog 1: Create a tablespace in the catalog Database: export Oracle_SID = ORCLcreate tablespace rmants datafile '/home/oracle/rman/rmants. ora 'size 20 M; Note: The tablespace name must not be rman. If it is rman, an error

Oracle ratio_to_report function Syntax analysis function RATIO_TO_REPORT is used to calculate the percentage of the index expr of the current record to all the same metrics of the record contained in the over window function. here, if the

Solution 1: If the Console is not installed on the database machine or the network service name is not configured using the Console. you can log on to the idle process on the server by running the command sqlplus sys/sys as sysdba. See step 4.

Migrate tablespace and data files from ASM to file system 1.2.1. tablespace and data file migration-from ASM to the file system www.2cto.com RMAN> backup as copy datafile 5 format'/u01/oracle/10g/oradata/gt10g/gtlions01.dbf '; starting backup at

Oracle collection two-dimensional operations Oracle collection is an object used in pl SQL development. It represents a group of ordered elements. The types of elements in a group must be consistent. It is divided into three categories: Associative

[SQL] www.2cto.com -- function: This function uses a combination of stored procedures and types to Perform Batch operations, saving system overhead and improving efficiency. -- CREATE Type bodies create or replace type TYPE_ARRAY as object (id

Oracle uses the user_db_like Stored PROCEDURE Java code create or replace procedure hello as -- Define the parameter www.2cto.com -- to get objectid cursor Cursor_Objectid is select id from (select a1.id from distinct a1 union select b1.id from

Oracle code modification SQL> shutdown immediate; Database closed. www.2cto.com Database dismounted. ORACLE instance shut down. SQL> startup mount; ORACLE instance started. total System Global Area 849530880 bytes Fixed Size 1339824 bytes Variable