Oracle

Oracle Audit is an afterthought, that is, after the database security problems, in order to locate, find the root cause of the problem, can be traced back through the audit. The Oracle audit consists of the following 3 sections: trigger-based

Many students on the optimization of SQL seems to know very little, recently summed up the following 34 articles for reference only. (1) Select the most efficient table name order (valid only in the Rule-based optimizer): The Oracle parser

First, view Oracle client version:sqlplus-v Second, see Oracle client version is 32bit or 64bit Method One: Step 1: Run the sqlplus/nolog command, if your server has more than one client version installed, then you should go to the bin

Article Source: Database Forum Author: Jackma The Java Database Connectivity (JDBC) API is a series of interfaces that enable Java programmers to access the database, and the interfaces of each developer are not exactly the same. After years of

A What is registration Registration is the registration of the database as a service to the listener. The client does not need to know the database name and instance name, just know that the database can be used to connect to the database with the

The Oracle tutorial being looked at is Oracle database and application Optimization Developer Network Oracle. Introduction: Fine Place to start, skillfully place diligently. The difference between Master and rookie is: Master know everything, rookie

Note: This article is translated from Oracle Data Guard 11g Handbook Page 78–page 88 In terms of data Guard (later written as DG), we only focus on the following three types of parameters: 1. Parameters independent of database roles2. Parameters

Enter Sqlplus Sql> Set Timing on Sql> Sql> Select COUNT (*) from Comm_human_role; COUNT (*) ---------- 866 elapsed:00:00:00.05 The above digital output is: Hours:Minutes:Seconds.Milliseconds It takes 0.05 seconds to execute, equivalent to 50

1. Estimated implementation plan-Explain plansExplain plan takes the SQL statement as input, gets the execution plans for the SQL statement, and stores the execution plan output in the schedule table.first, in front of the SQL statement you want to

About the Not equal number in Oracle:In Oracle, <> != ~= ^= is not equal to the meaning of the number. can be used. But it's weird. Yes, I want to take out a product that price is not 180000: (Price is of type number) SELECT ID, name from product

My colleague received a task yesterday to process the contents of the Oracle database in PHP, but the PHP open Oracle extension is not as straightforward as MySQL, and requires a little something to open it. The first step is to have the official

A table that attempted to establish a deferred segment property in 11.2 encountered a ORA-14223 error: Sql> SELECT * from V$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g

1, the use of dual table Dual is an actual table in Oracle that can be read by any user and is often used in a SELECT statement block that does not have a target table (1) View current connected users Sql> Select User from dual; USER -----------

Oracle can save an online log file to a number of different locations, and the process of converting an online log to an archive log is called archiving. The corresponding log is called an archive log. One, archive log is a copy of the online redo

1, FGA strategy (fine-grained audit) DBMS_FGA is a package for the SYS user (1) Increase FGA strategy --Audit form GRANT Resource,connect to bank identified by bank; CREATE TABLE BANK. ACCOUNTS （ Acct_no number PRIMARY KEY, cust_id number

--Find out the unit ID of all cash centersWithAllunitAsSelect T.organizationid Orgid,t.parentidFrom Cdms_organization t where T.category = 4Start with T.organizationid = ' 05e85693-14b0-4582-8063-8fbde85371f0 'Connect by T.parentid = PRIOR

1. Download Oracle SQL Developer Third-party database driver on Oracle websiteDownload page: http://www.oracle.com/technetwork/developer-tools/sql-developer/thirdparty-095608.htmlDownload the MySQL Drivers from the MySQL Site. There is drivers here:1

Pre-query Trigger in Oracle d2k/oracle FormsDescriptionFires during Execute query or Count Query processing, just before Form Builder constructs and issuesThe SELECT statement to identify rows that match the query criteria.Definition Level form or

If I were Cristiano Ronaldo . Brief introduction of the simple use method of ORACLE PL/SQL sequence (sequence)Sequence is widely used in Oracle, meaning the serial number, which automatically increases the specified variable, such as 1 or 2

In the 12c pdb environment, if the root pdb's undo file is abnormal, how can the database be restored? This article simulates recovery when undo is lost.Simulated EnvironmentThree sessions. The first session operates on the tables in pdb1, and some