Oracle

This blog is the fourth of the Oracle Profile series, which focuses on creating profiles and using profiles for resource and password controlCREATE ProfileNote:Oracle recommends the Database Resource Manager rather than this SQL statement to

recursive queries in Oracle can be used by: Select, start with, connect by.. Prior The following describes the common ways in which tree queries are used in Oracle, with only one table involved. I. Build a TABLE statement:--Menu directory Structure

Oracle Database Sqldatabaseloggingfile –===================== – Manually delete the Oracle database –===================== In many cases, or unable to use the DBCA tool, we need to manually delete the database. This can be accomplished with the drop

Database on the hierarchy of the processing model has a lot of, can according to their own needs to design models, of course, the simplest is the most easily designed model is called adjacency model. In this regard, other databases such as Oracle

Constraint (Constraint): A restriction on the column properties, fields of the created table. such as: Not Null/unique/primary key/foreign Key/checkScope of Action:① column-level constraints only work on one column② table-level constraints can

A problem with an Oracle database that is deployed on IIS that WebService connect the English character set is "not registered on the local computer" msdaora.1 "provider" with the following solution:Cause: such as an error, the 64-bit system is not

1. Set password for SYS in password file:Orapwd file= $ORACLE _home/dbs/orapw2. Drop repos data copied from the original database (if you are need to unlock Sysman user first):Emca-deconfig Dbcontrol Db-repos Drop3. If EMCA cannot drop user Sysman,

I. Overview of schedulingHere I see an overview of scheduling that feels better than mine, but is limited to the overview section, other parts I think I speak better than him, so the following things happen:Gorgeous reprint of ***********************

"Deep analysis--eygle" study notes1.2.3 PGA Management:[Email protected] Sql>show parameter area_size NAME TYPE VALUE---------------------------------------------------------- ------------------------

Before using Oracle, think of its recursive query is very useful, the study of SQL Server, found that it also supports recursive query in SQLTo illustrate:The SqlServer2005 version of SQL is as follows:For example, a table with ID and PID fields, ID

Oracle Memory ArchitectureThe basic memory structures associated with Oracle instances include:System global Area (SGA): shared by all servers and background processes. Examples of data stored in the SGA include cached data blocks and shared SQL

1, download Oracle 11g R2 version of Windows, the official following:Http://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_database_1of2.zipHttp://download.oracle.com/otn/nt/oracle11g/112010/win32_11gR2_database_2of2.zip2. Unzip two

First, Oracle downloadNote that Oracle is divided into two files, and after downloading, two files are extracted to the same directory. In the path name, it is best not to appear in Chinese, and do not appear spaces and other irregular

Account Environment: AIX7.1 + Dual-node Oracle RAC 11.2.0.3Since this set of RAC is not installed in its own department, it is installed by the development department and is now managed by the Operations section, and customers need to command the

UNIX and Linux Shared Memory and OracleThe UNIX and LINUX operating systems allocate memory based on a interprocess communication model (IPC) to manage memory s Egments for Oracle database environments.To obtain details on shared memory for UNIX and

method One: Use the TO_CHAR FM formatTo_char (Round (data.amount,2), ' FM9999999999999999.00 ') as AmountThe disadvantage is that if the value is 0, it will be displayed as. 00 instead of 0.00.Another note is that the number of decimal points to the

Unique name and namespace 1. The oracle database has multiple namespaces, Distribution: USER, ROLE, and public synonym are in the same namespace. Table, view, sequence, private synonym and user-defined type objects are in the same space. The

Use of fine-grained oracle Auditing Take the scott user's emp table as an Example ---- Add a policy Begin DBMS_FGA.ADD_POLICY ( Object_schema => 'Scott ', Object_name => 'emp ', Policy_name => 'mydomainy1 ', Handler_schema =>

Use of fine-grained oracle AuditingTake the scott user's emp table as an Example ---- Add a policyBeginDBMS_FGA.ADD_POLICY (Object_schema => 'Scott ',Object_name => 'emp ',Policy_name => 'mydomainy1 ',Handler_schema => NULL,Handler_module =>

PLSQL remote connection to Oracle server, plsqloracle Server Only one remote connection method is introduced here, that is, the Oracle client and PLSql tool are installed on the local machine, and the server is installed on the virtual machine or