Database Administrator

Oracle views the properties of a tablespace, modifies the tablespace status, and oracle viewsThe status attributes of a tablespace mainly include online, offline, read only, and read write, the read-only and read/write statuses are special online

[Translated from mos] in RAC database, how does one kill a session independently of an instance ?, Mosrac Source:How to Kill a Session on RAC Database In Instance Independent Fashion. (Document ID 869777.1) Applicable:Oracle Database-Enterprise

I just noticed that xinetd is not installed in rhel6 by default ., Rhel6xinetd [root@rhel63single sbin]# chkconfig --list | grep xinetd[root@rhel63single sbin]# yum list xinetdLoaded plugins: product-id, refresh-packagekit, security,

SQL Summary 4. SQL Summary Speaking of SQL, the stored procedure is undoubtedly very important. This article will discuss the stored procedure with you. 1: storage process A: stored without Parameters USE testGOCREATE procedure wly -- stored

Concerning the problem that the number of records returned by the ADO record set GetRecordCount () is-1, adogetrecordcountTo operate databases using ADO, we usually use the GetRecordCount function to quickly determine the total number of records in

Mysql dual-master Hot Standby, mysql 1. Create A database on server A and import the database [Root @ dns/] # mysql-u root-p Mysql> show databases; Mysql> create database cdn; Mysql> use cdn; 2. Create a database on server B and import it to the

SQL % NOTFOUND and SQL % NOTFOUND SQL % NOTFOUND is a Boolean value. Interacts with the latest SQL statement (update, insert, delete, select). If the latest SQL statement does not involve any rows, true is returned. Otherwise, false is returned.

In-depth introduction to Redis (I) and brief introduction to redisWhat is Redis official description Redis is an open-source log-type key-value store that supports Network and memory persistence. I personally think this description is too simple to

Oracle users unlock lockd, oraclelockd The following error is reported when the user doiido connects to oracle: ORA-28000: the account is locked View user statusSQL> conn/as sysdba SQL> SELECT username, account_status FROM dba_users;

Extjs5 memo (1) and extjs5 memo Extjs5 1. Install the portable USB flash drive appache server. Then enter rootdir, clear the directory content, and put your own content. 2. Helloworld Html: Index.html is as follows: Welcome to ExtJS!  

Which of the following MySQL fields can be obtained or queried? More: http://www.webyang.net/Html/web/article_138.html Mysql is often used to query specific fields and occasionally needs to display a part of the value of a specific field. How can

Mysql char varchar blob text performance details, varcharblob Char Fixed Length, up to 255 bytes. If the storage space is not full, a space will be filled on the right side of the data. Varchar The maximum length is 65536 bytes. When the varchar

Path to mathematics-sas memo (8), path to mathematics-sas memo Input and Output formats Libname saslib "H: \ sas "; DataSaslib. test4; Input id $ Name: $ char15. Score Birthday; Label id = "student id" name = "name" score = "score" birthday =

Transaction, transactions Transaction Features (isolation level) A: atomicity. Transactions are an inseparable unit. C: consistency. transactions must change the database from a consistent state to another consistent state. (For example, transfer) *

Temporary tables, external tables, and partition tables in Oracle, Temporary tables, external tables, and partition tables in OracleTemporary table In Oracle, a temporary table is "static". It only needs to be created once like a common data table.

Oracle subquery, create and manage tables, and oracle query CreationSummarySubquery: Single Row subquery: returns a single rowUse Single Row comparison OperatorsMulti-row subquery: multi-row subquery returns multiple rowsMultiline operators:IN, ANY,

How to solve the case-sensitivity problem when comparing SQLite strings. sqlite strings are case-insensitive. Most databases are case insensitive when comparing strings. However, when we recently used SQLite, we found that the opposite is

The method for resetting the auto-numbered column in SQLite. Currently, all popular databases provide automatic numbers, and SQLite is no exception. When the database contains an automatically numbered field, SQLite automatically creates a table

When kettle logs on to the loading job, the following error occurs: Can't find Job 1, kettlejobCause of error: Job 1 is a temporary new job. I did not save the database or local file, so the file cannot be found during loading.Solution: directory C:

11g RAC full installation diagram (VM Workstation8.0 + Centos5.5) 02-Oracle Installation, vmworkstation Run the following command on node 1 (crydb01: [root@crydb01 app]# chown -R oracle:oinstall /u01/app/oracle[oracle@crydb01 database]$