Oracle

Today, we mainly take Oracle database as an example to introduce the solution to data deletion in the table. (regardless of full-library backup and utilization of archive logs)There are three ways to delete data in a table:Delete (delete a

//Oracle Loops Insert DataprocedureInsert_wdata (P_code1 ao_model.code1%type, P_brandid ao_model.brandid%type, P_codevarchar2, P_conf_valvarchar2, P_descvarchar2, P_code2varchar2, P_descvarchar2, ErroutinchOutvarchar2) is begin --Parameters

Example:1) Find employee information with a salary above 3000SELECT *Froms_emp Ewhere e.salary>3000;2) Find all information about employees who are known as CarmenSELECT * FROM S_emp EWheree.first_name = ' Carmen ';"Oracle SQL keywords, table names,

Oracle database language types generally fall into five major types1 DDL (data definition language) Definition languageCREATE TABLE: Creating tablesALTER TABLE: Modify tablesdrop TABLE: Delete tables (delete the table as a whole, the table structure

1. The database does not start the error "Ora-12162:tns:net service name is incorrectly specified" workaround.See if you have the Echo $ORACLE _sidNo, export ORACLE_SID=ORCL.Re-execute Sqlplus/as sysdbaExecute startup to start OracleLink to the

There are three main ways to set up operations:Unions, union two sets the same part is reserved only one copy, the different parts are all reservedUNION all two collections all reservedIntersection, intersect two sets retain the same partDifference

Set Line 200Set pagesize 0Set Long 99999Set Feedback offSet echo offGet the DDL for tables, indexes, views, stored procedures, functions:Select Dbms_metadata.get_ddl (' TABLE ', ' table_name ', ' Table_owner ') from dual;Select Dbms_metadata.get_ddl

Oracle permissions-related queries really a bit more views, record the common statements, easy to query:1. View All Users:SELECT * from Dba_users;SELECT * from All_users;SELECT * from User_users;2. View user or role system permissions (System

----Show The number of Redo Log switches Per Hour--SET PAUSE onSET PAUSE ' Press Return to Continue 'SET PAGESIZE 60SET linesize 300SELECT to_char (first_time, ' yyyy-mm-dd ') Aday,To_char (first_time, ' hh24 ') hour,COUNT (*) TotalFrom

12C configuration OEMs are significantly different from previous versions, without Emctl, and are configured directly using the following methods:Sql*plus:release 12.1.0.2.0 Production on Tue Jul 19 07:19:33 2016Copyright (c) 1982, Oracle. All

View the specified record location in an Oracle tableSelect rowid,user_id from Sshr.xx_user where user_id=3010586Select rowID,Dbms_rowid.rowid_object (ROWID) object_id,DBMS_ROWID.ROWID_RELATIVE_FNO (ROWID) file_id,Dbms_rowid.rowid_block_number

The following three query results can be queried with the change in memory parameter settings changes in performance, the Oracle database memory settings have some suggestions and guidance role.Select T.sga_size,t.estd_db_time_factor from

1 Nested Loops Join--we use the set Statistics_level=all to observe the execution plan of the following table join statement:--T2 table is accessed 100 times (drive Table access 1 times, drive Table Access 100 times)--This set Linesize 1000 has an

Oracle Notes (15) Database backupThe backup operation of the database is one of the most important tasks in running the entire project.I. Export and import of dataThe export and import of data is for a user's backup operation, which can be done as

Sample Code of spring JDBC Batch Data Processing and spring JDBC code Parameters: List paramMaps = new ArrayList();for(int i = 0; i Method: Public void saveSpringJDBC (Map [] paramMap) throws Exception {NamedParameterJdbcTemplate

Backup recovery case in rman and rman backup recovery case Backup RMAN> show all; RMAN> configure controlfile autobackup on; Set automatic backup of Control Files RMAN> backup database format = '/home/oracle/myrman/prod _ % s. Bak' filesperset

Solution for failing to open the entire database due to accidental deletion of pdb data files in oracle 12c, 12 cpdb Preface Recently, a colleague accidentally deleted the data files of a plug-in Database (PDB), and the results showed that the

Oracle 12c implements manual database creation instead of CDB and CDB creation. Preface I believe everyone knows that for Oracle DATABASE creation, apart from dbca (GUI interface), Oracle also supports manual DATABASE creation, that is, using the

Detailed Management and Maintenance of Oracle AWR, oracleawr Preface Zookeeper AWR is short for Automatic Workload Repository. AWR management is mainly for snapshot and baseline management. For example, set the snapshot interval, delete the snapshot,

Detailed steps for installing the Oracle 11g Server Oracle 11g is the latest database software released. Oracle 11g has more than 400 features. After more than 1500 hours of testing, the development workload reaches 36 thousand people/month, it is