Database Administrator

Alter any cluster: modify the permissions of any cluster Alter any index Alter any role Modify permissions of any role Alter any sequence Alter any snapshot Alter any table Alter any trigger Alter cluster Modify permissions on clusters Alter

Note: Questions and Answers are from the Internet. This article only provides answers for users to learn! Question: Answer: This topic describes the usage of merge. The concepts are as follows: The MERGE statement is a new syntax of Oracle9i, used

A manual database creation was implemented and OEM was enabled to manage the database. The following operations use the Oracle user group: 1. Create the text initialization parameter file init $ SID. ora and the corresponding dump directory Vi $

Backup: Db_fullbak_jssbook.bat Name = "code" class = "SQL"> SET Oracle_SID = jssbook Rman target/LOG = c: \ ORACLE \ SCRIPT \ BACKUP \ LOGS \ BAK _ % DATE :~ 0, 10%. LOG Export File = c: \ ORACLE \ SCRIPT \ BACKUP \

In Oracle, the Number type can be used to store 0, positive, negative, or floating point numbers. The data range can be 1.0*10 (-130) -- 9. 9... 9*10 (125) {38 9 followed by 88 0} digits. When the value of the mathematical expression in Oracle is

MongoDB is a product between relational databases and non-relational databases. It has the most abundant functions and features like relational databases. The supported data structure is very loose and is similar to the json bjson format. Therefore,

Run the sqlplus command in SSH Secure Shell. If the SQL plus command cannot be found, the Oracle environment variable is not configured. The configuration method is as follows: Find the. bash_profile file (Note: This configuration environment

First, extract the official document and get a dump content to verify it. I. data block formatData Block Format The Oracle data block format is similar regardless of whether the data block contains table, index, or clustered data. Figure

Stored procedures are essential tools in database systems. stored procedures are a collection of SQL statements pre-compiled to implement a complex function. I will not talk about its advantages. Let's talk about the problems I encountered. During

Start the subscription and publish Client On the subscription Client Redis 127.0.0.1: 6379> PSUBSCRIBE shareReading messages... (press Ctrl-C to quit) 1) "psubscribe" 2) "share" 3) (integer) 1 Indicates that the client subscribes to the share

Stored Procedures and functions A subroutine stored in a database for calls by all user programs is called a stored procedure and a stored function. Create a stored procedure: UseCREATE PROCEDURECommand to create a stored procedure and a stored

Test the Mongodb + V8 JavaScript Engine I know that Mongodb's JavaScript Engine is SpiderMonkey, so I want to compile a v8 version of Mongodb and test it with the following JavaScript file. Prepare the test code: Code highlighting produced by

In OCM, the deployment uar configuration is implemented on the same host. 1. Enable the logging function of the primary database.Alter database force logging;2. Enable the archiving function of the primary databaseAlter database archivelog;3. Shut

Error: [Oracle@www.bkjia.com data] $ exp "sys/oracle@www.bkjia.com as sysdba" file =/data/sys. dmp log =/data/sys. log full = y;LRM-00108: invalid positional parameter value 'as' EXP-00019: failed to process parameters, type 'exp HELP = y' for

In the Oracl RAC 10.2.0.4 environment where the operating system is Linux, the local hard disk of a node server is suddenly damaged and stops running. The remaining node still works normally and continues to provide external database services. The

1. First, I created a user named "bkjia" and set his password to "bkjia123" (an SQL statement operated as sys) Create user bkjia identified by bkjia123; 2. assign some permissions to new users Grant create session to bkjia;Grant create table to

Oracle 10gORA-074451. Software and version used by the database Serial number Name Content 1 Operating System CentOS release 5.6 (Final) x86-64 2 Database Version Oracle Database 10g Release 2 3

For example, there is a shortage of hard disk space in a development library recently. A new disk is added to prepare to move all the data files to the new disk.First, list the data files to be moved. The data files belong to the tablespace. The

Column value selection, Set cluster, and column chartRemember, the optimizer understands many important features of column data in a table. The most notable is the column value selectivity and the clustering factor of the column.For example, we can

ArchitectureI. Basic Components1. The Oracle Server is a database management system, including oracle instances and oracle databases ).2. An oracle routine is a database access tool consisting of a memory structure and background processes. It