Oracle

Oracle recursive query can process parent-child relationship records. The following describes how to use oracle recursive query to process parent-child relationship records for your reference. The database often processes records of parent-child

There are often repeated records in Oracle databases. "Oracle Repeated Records" have two meanings: Oracle Repeated Records. One is completely Repeated Records, that is, record where all fields are repeated. Second, record with duplicate key fields.

Oracle queries are sometimes subject to certain conditions, such as case sensitivity. The following describes how to ignore the case sensitivity of Oracle queries. If you are interested in Oracle queries, take a look. The database has four records:

During the development process, images are often stored in oracle. The following describes how to easily store images in oracle. It is helpful to you. Any development tool can store image files in a database by calling the process.Detailed steps for

The Oracle memory structure is an important part of the Oracle database system. The following describes the SGA memory structure in the Oracle memory structure, which is helpful to you. SGA is a group of shared memory structures allocated to the

The Oracle stored procedure can be debugged and modified as needed. The following describes how to modify an Oracle Stored Procedure for your reference. If you want to execute the Oracle stored procedure, you first need to write a "Hello World!"

The oracle authorization statement is used to grant permissions to oracle database users. The following describes the usage of the oracle authorization statement in detail and hopes to help you. Oracle grant authorization statement: -- Select * from

Reading and Writing files in Oracle stored procedures is an important means to achieve interaction between files and database tables. The following describes the knowledge of reading and writing files in Oracle stored procedures in detail and hopes

Oracle archive logs are certainly not unfamiliar to everyone. The following describes how to modify the size of Oracle archive logs, hoping to help you learn about Oracle archive logs. Method: Add a new large log file and delete the old small log

Sudden computer failures or viruses may causeDatabaseImportant data is lost or unavailable. In order to prevent such a problemBackupThe following is an analysis of Database Backup in several cases. First case: Do I need to back up the database if I

Basic knowledge about Oracle databases 1. components contained in Oracle:In Oracle, a database refers to the entire Oracle RDBMS environment. It includes the following components: Each Oracle database runs on a central SYSTEM category and data

Online redefinition tables have the following features:: To call the DBMS_REDEFINITION package, you need the EXECUTE_CATALOG_ROLE role. In addition, you also need the create any table, alter any table, drop any table, lock any table, and select any

Oracle DatabaseIt has good functionality and is widely used. It is inevitable that some faults will occur during Oracle database operations. This article mainly introduces the recovery of Oracle Database Redo faults. I. Recovery of lost inactive Log

How to deal with Oracle locks that cannot be killed: 1. The following statement is used to query which objects are locked: Select object_name, machine, s. sid, s. serial # From v $ locked_object l, dba_objects o, v $ session s Where l. object_id = o.

Oracle PerformanceThe adjustment is the prerequisite for ensuring that the Oracle database works normally and is one of the most important tasks in Oracle Database Operations. This article will mainly introduceBuffer ZoneInternal

We know that,Oracle DatabaseThe archive mode and non-archive mode can be enabled. When the archive mode is enabled, Oracle generates manyArchivelog FileBy default, the folder will not be cleared regularly. It takes a long time to occupy a large

Last time, we introduced the brief introduction of Oracle Database ASH and AWR. Today we will detail the composition of AWR and its working principles. Next, let's take a look at this part. 1. Memory size occupied by ash ASH's collection information

Oracle DatabasePackageConstruction ProcessThere is no name. It is the part that begins with begin and ends with end after other processes of the package are implemented. This article introduces an example of the construction process. Let's take a

Oracle 11g R2DatabaseExample userThe installation instructions are what we will introduce in this article. We know that in Oracle10g, if we do not select an installation example when creating an instance, after creating an instance, you can also use

OracleDatabase executionStored ProcedureThe error message is as follows: ORA-20000: ORU-10027: buffer overflow, limit of 10000 bytes ORA-06512: at "SYS. DBMS_OUTPUT", line 32 ORA-06512: at "SYS. DBMS_OUTPUT", line 97 ORA-06512: at "SYS.