Oracle

In theory, AWR data should be cleaned automatically based on retention time, but in fact, it often comes across:col segment_name for a32;set linesize 500;set pagesize 500;with t1 as (select round(sum(bytes)/1024/1024) MB,segment_name from

Cursor Definitions:A cursor is a way of working with data, in order to view or manipulate the data in the result set, the cursor provides the ability to move forward or backward through the data in the result set one line at a time or in multiple

[[email protected] ~]# yum install -y kmod-oracleasm*[[email protected]  ~]# rpm -ivh oracleasmlib-2.0.4-1.el6.x86_64.rpm[[email protected] ~]# rpm  -ivh oracleasm-support-2.1.8-1.el6.x86_64.rpm[[email protected] ~]#  /usr/sbin/ Oracleasm configure -

By default, when the Oracle database installation is complete, the user's password is valid for 180 days, and if the password expiration fails to affect the business operation, it should be modified to unlimitedLogin SqlplusConnected to Oracle

1. DefinitionThe so-called stored procedure (Procedure) is a set of SQL statements that is used to complete a specific database function, which isCompiled and stored in the database system. In use, the user specifies the stored procedure name that

Find/-type f-size +500m | Xargs Du-hm | Sort-nrThe ORA.CRF service is a service for cluster health Monitor (CHM), which is used to automatically collect the usage of the operating system's resources (CPU, memory, SWAP, process, I/O, and network, etc.

With 0221222 incremental backup strategy, 7 days a cycleThat is, Sunday level 0 backup, Week 1 2 4 5 6 with 2-level incremental backup, week 3 with 1-level incremental backupOpen Control File Automatic backupCONFIGURE Controlfile autobackup

Log in to the database:Way (1) when we just installed the Oracle database, login to the account can use Win+r input sqlplus, enter the sqlplus command window, and then enter the user name and password, there will be no echo when you enter the

one-line functionOnly a single row is processed, and a result is returned for each row.1. Character Functions(1) concat (STR1,STR2) string concatenation functionSelect concat (' Hello ', ' world ') from dual;--equivalent to select ' Hello ' | | '

CmdSqlplus/as Sysdba;1: Create a temporary tablespaceCreate temporary tablespace sjztjpt_tempTempfile ' D:\app\chenxp\oradata\orcl\sjztjpt_temp.dbf 'Size 50mAutoextend onNext 50m maxsize 20480mExtent management Local;2: Create a data table

The reason to record this blog post is because a query that was made in the past time has been found to start from 00:00:00 this time period, you have to stitch the string. select T.*, U. User_single_fee from Tab_tag_lease_apply T left JOIN

Functions are mainly used to manipulate various data and return the corresponding operation results. A user-defined function is a block of code stored in a database that can be returned to the calling program.Syntax for the function:Create [or

Meaning and usage of oracle decode (), oracledecode Description: Decode (condition, value 1, return value 1, value 2, return value 2,... value n, return value n, default value) The function has the following meanings: IF condition = value 1

Use the doscommand line to connect to the oracle database in WINDOWS. How can I connect to the Oracle database with the prompt (cmd.exe) of the computer? Doscommand line connection to oracle Database Assume that an Oracle database has the

Oracle Database query is not garbled, and data garbled characters are displayed on the web end, oracleweb Recently, we migrated a project from our company, oracle deployed on one linux server, and web project deployed on another linux server.

Basic PL & SQL programming introduction and practices, Basic PL & SQL programming introduction and practices1. Start (p1 ~ P2)2. Background (p3)3. features and advantages (p4 ~ P5)4. Instructions for use (p6)5. syntax structure (p7)6. Naming

Direct path write wait event causes database hang, directhang My colleague responded that the database seemed to have been suspended for a while more than 10 minutes and asked me to check whether there were any problems with the database. The

RMAN-06172 Troubleshooting, rman-06172   The error "RMAN-06172: no autobackup found or specified handle is not a valid copy or piece" was encountered during the RMAN restoration test today, as shown below:   RMAN> restore spfile to pfile

ORACLE database Stored Procedure demo sharing, oracledemo Small ORACLE database Stored Procedure demo Create or replace procedure TEST1 (p in varchar2, blood_type_name out varchar2, blood_type_remark out varchar2) as begin select "blood_type_name"

Record of ORA-01691 error reported by Data Pump replication library, ora-01691 Today, I want to report a database error 01691. I learned the following online: The table space is insufficient. Based on your own error message View the tablespace