Oracle

Transferred from: http://www.cnblogs.com/sc-xx/archive/2011/12/03/2275084.htmlCursor cursor_name is select_statement--For loop cursors--(1) Defining cursors--(2) Defining a cursor variable--(3) using the For loop to use this cursorDeclare --Type

Oracle Flashback Technologies-Flash back queryView the modified record of a row of data in a table#创建一个表, and insert and modify dataSql> CREATE TABLE Y3 (IDint, Name VARCHAR2 ( -)); Table created. SQL> INSERT into Y3 values (1,'Wahaha');1row created.

The libraries in the ASM instance of the RAC server are corrupted, some data files are missing, and control files and SPFile are lost. The DB instance is also in the shutdown state.1, find the location of the backup sliceBy looking, the backup slice

To query for wait events in the database:SET Lines 100SET pages 10000COLUMN wait_class Format A12COLUMN Event Format A30COLUMN total_waits Format 999999COLUMN total_us Format 999999999COLUMN pct_time Format 99.99COLUMN avg_us Format 999999.99SET

Example: Change Bogon to AdelababyOracle Linux 6.5[Email protected] ~]# hostnameBogon[Email protected] ~]# hostname Adelababy[Email protected] ~]# hostnameAdelababy[Email protected] ~]# vim/etc/sysconfig/networkNetworking=yesHostname=adelababy[email

1, abnormal phenomenon: TNS is not recognized2, exception Analysis: VS2010 start Debugging, an exception occurs. However, when using IIS as a server, there is no exception, that is, normal access to the database, and later analysis is due to VS

Theory:nbu use a automatic script to connect RMAN and backup databaseSteps:First,make a automatic script.Second,build a Oracle PolicyFirst:Make a automatic script. NBU have provide some scripts on it ' s client directoryYou can find it

1. Some common operators operator meaning = Equals <>,! =, ~=, ^= Not equal to Less than > Greater than Less than or equal to

CREATE table Computers (Comno number (4) constraint Pk_comp primary key, Compmodel VARCHAR2 (+) constraint Unique_comp Unique, Buytime date, price number (12,2) constraint ch_price check (price>0 and priceOracle Graceful for loop inserts in loop

First, what is the waterline (high water Mark)?All Oracle segments (segments, where, for ease of understanding, suggest segment as a synonym for a table) have a limit on the amount of data that can be accommodated in a paragraph, we call this cap

Common view Table Structure commandsElect table_name from User_tables; -- The current user 's tableSelect table_name from All_tables; -- All users ' tablesSelect table_name from Dba_tables; -- including system tablesSelect table_name from

Requirements: Asset repair table in the same asset may be repaired to continue to apply for maintenance, this time the maintenance status needs to determine the maintenance status according to the most recent repair times, so duplicate data under

Here are a small write-up which should help those who still write plain Java JDBC code. I know we have some wonderful persistence frameworks like Hibernate this make ones life comfortable and the reality is we The still has to deal with the plain

View and other object operationsExperimental purpose(1) Grasp the establishment of the view, query, modify, delete operations.(2) to master the establishment of synonyms, query, modify, delete operations, compare the operation of the synonym to the

First, the problem descriptionIn a software development project, you need to build 10 identical Employee Information table TB_EMPLOYEEINFO0~TB_EMPLOYEEINFO9 in the Oracle database and establish a stored procedure that inserts data into these 10

#receive the fileFlume-ng agent--conf conf--conf-file conf1.conf--name A1Flume-ng agent--conf conf--conf-file conf2.conf--name hdfs-agentFlume-ng agent--conf conf--conf-file conf3.conf--name file-agentConf1.confA1.sources = TailA1.channels =

One rhel5.8 file system read-only caused by ORA-00354: corruptredologblockheader An rhel5.8 file system read-only caused by ORA-00354: upt redo log block header Wed Jun 03 03:31:24 CST 2015 Thread 1 advanced to log sequence 396 (LGWR switch) Current

Oracle Learning (18) [DBA]: Distributed DatabaseWhat is a distributed database? L data is physically stored on multiple nodes of the network, logically being a whole.The independence of distributed databases l the independence of distributed data

Oracle BASICS (5): Multi-Table query I. Multi-Table query (1) simple multi-Table query  1. Multi-Table query mechanism 1) SQL: SELECT * FROM emp; -- 14 records SELECT * FROM dept; -- four records SELECT * FROM emp, dept; -- show 56 data records ??

Oracle Learning (11): PLSQL ProgrammingWhat is the structure and composition of PL/SQL ?? PL/SQL (Procedure Language/SQL )? Is PLSQL a procedural extension of Oracle's SQL language? It refers to the addition of process processing statements (such as