Oracle Spatial Database Function usage

Oracle Spatial Database Function usage Recently, I have been using Oracle's spatial database for some spatial data processing and analysis functions. I wrote this article mainly to take notes. After all, good memory is not as bad as writing. First,

Ubuntu uses the Oracle Debian repository to install the Oracle server

Ubuntu uses the Oracle Debian repository to install the Oracle server In fact, this article in Ubuntu official help page, Oracle specifically debian oracle Repository: http://oss.oracle.com/debian the repository version: Oracle 10g Express Edition (

Oracle password files and logon methods

Oracle password files and logon methods Preface: As we all know, the Oracle database has a password file, which is used to log on to the database and perform a series of mount and open operations when the database is not started; The experiment

RMAN backs up the database and restores it to another machine.

RMAN backs up the database and restores it to another machine. 1. dbid and data file name query on the source database run in archive ModeSelect dbid from v $ database;Select file #, name from v $ datafile;Create pfile from spfileSelect * from v $

Error Caused by ORA-09925: Unable to create audit trail file

Error Caused by ORA-09925: Unable to create audit trail file When I practiced manual Oracle database creation today, I set the path in the parameter file audit_file_dest incorrectly and reported an error during startupnomount, After modification,

Configuration of innodb_memcache

Configuration of innodb_memcache Before innodb_memcache is installed, You need to import the configuration SQL, which is located in the share directory of the installation directory, and the file name is innodb_memcached_config. SQL, which can be

How Does Oracle 11g modify AWR retention period less than 8 days?

How Does Oracle 11g modify AWR retention period less than 8 days? Oracle Database 11g has a system-defined Moving Window Baseline by default. This Baseline corresponds to all AWR data during the AWR retention period.Only one Moving Window Baseline

Install SQL Developer on RHEL5

Install SQL Developer on RHEL5 The process of installing SQL Developer is relatively simple. You should first install java support and then install the SQL Developer software. The order can also be reversed. Then configure the Java point of SQL

MySQL implements Minus and Intersect)

MySQL implements Minus and Intersect) MySQL does not implement the Minus and Intersect functions, just as it does not implement the cube function. You can use SQL to implement the same function, which is troublesome. Drop table t1; Drop table

How to solve ORA-12170 TNS connection timeout

How to solve ORA-12170 TNS connection timeout Recently, when I suddenly connected to the local Oracle database through plsql for a while, I reported that the ORA-12170 TNS connection timed out! The phenomenon is that the network is not connected

Introduction to Oracle XML operations in various scenarios

Introduction to Oracle XML operations in various scenarios Recently, I have been studying Oracle PLSQL's series of XML operations. Combine the knowledge and references used in the work to sort out the following content: 1. How to generate an XML

How to update a table using query results in Oracle

How to update a table using query results in Oracle Oracle uses the results of one query to update the data of another table. The simulation experiment is as follows. Use the query results of table t2 to update data with the same id as table

Undo tablespace and redo logs

Undo tablespace and redo logs Differences between undo and redo and their respective functions 1. Features of undo data: 1. It is a backup before data modification, mainly to ensure the user's read consistency 2. generated when the transaction

Introduction to Oracle insert all statements

Introduction to Oracle insert all statements In Oracle, the insert ALL statement is described as follows: 1. insert all unconditionally Create table t1 (product_id NUMBER, product_name VARCHAR2 (80), month number ); Insert into t1 VALUES (111,

Oracle lab environment setup (Windows + Oracle 11g)

Oracle lab environment setup (Windows + Oracle 11g) I. systems and software Windows 7 + Oracle 11g 2. Prepare the installation environment Prepare for ORACLE Installation 1. Delete Environment Variables D: \ oracle \ product \ 11.2.0 \ dbhome_1 \

Oracle Database Development

Oracle Database Development In the Oracle database system, tables are the basic objects of databases, and all data in the database exists as tables. Environment-Oracle 11g I. Table typeCommon tables in Oracle Database systems include: heap

What is the difference between decode and case when?

What is the difference between decode and case when?Decode can only be equivalent, case when can be used for range, range can be used for condition differentiation, decode can do, and case when can also do; in terms of efficiency, I personally think

Password verification during Oracle user Creation

Password verification during Oracle user Creation We need to perform some performance tests in the test environment today. In order not to affect the original data, we need to create a temporary schema. However, the following error is reported

DB2 SQL0902C solution instance

DB2 SQL0902C solution instance On Sunday, when the development environment archives and deletes the database, after the database is restarted, the database cannot be opened, and the database will be restored in the future because it is the

Oracle OS verification Logon

Oracle OS verification Logon Username and password are our most common security authentication policies and the most common security protection policies we use in various application system software. It is a natural responsibility for Oracle to

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