Tags: china-pub computer OracleThis is a high quality pre-sale recommendation of Computer class OCA Certification Exam Guide (1z0-061) Oracle Database 12c SQL Foundation ". Oracle Certified Master (OCM) 's latest work, the
Tags: 1.2 html min Load Windows nload Oracle official website Oracle ACLTossing an afternoon, a few pits, and finally with PL/SQL connected to Oracle, tanning pits experience. First go to the Oracle website 12c, the official websi
Oracle 12c has been released for a long time, has been trying to find a way to learn a bit, after all, the subsequent 12c will gradually replace the existing database version, become the mainstream database version. Now 12c some o
key challenges of Database work in the private cloud.
At the same time, traditional database storage structures cannot meet the needs of massive data queries, and the database system becomes more and more complex. Data processing and urgent big data analysis are the core requirements of databases. The launch of Oracle
non-routine recovery of Oracle 12C CDB database without database backupFamiliar with Dul friends know Dul is file# 1 Block 1 kcvfhrdb find bootstarp$ Segment Header (in fact Kcvfhrdb is bootstarp$ segment Header RDBA address), Then through the related SQL stored in the boots
Label:Oracle column self-increment-identity Columns in Oracle Database 12c Release 1 (12.1)In previous versions of Oracle 12C, if the column was to grow from a sequence + trigger, the new Identity columns feature was introduced into the
, being sure to select Enterprise Edition. When prompted, choose software is only from the Database Configuration screen. 7) If you have a existing database, then point your oracle_sid to this pre-existing database. If Your existing database is on Windows and then you must re-create the DB service using Oradim.
The new features of In-database archiving are introduced in Oracle Database 12c, which allows users to archive data by marking data rows on the table as inactive inactive. These inactive data rows can be compressed into one optimization and are not visible to the app by default. This feature enables the functionality a
Dangdang page Link:Http://product.dangdang.com/23625712.html1th. Oracle Database Basics1.1 What is a relational database1.1.1 Relational Database modelFounder of the 1.1.2 relational data model1.2 A brief history of Oracle database developmentThe beginning of 1.2.1 Company1.
Dangdang page Link:
The 1th chapter Oracle Database Basic knowledge1.1 What is a relational database1.1.1 Relational Database modelFounder of 1.1.2 Relational data model1.2 Oracle Database Development historyThe beginning of 1.2.1 Co
In the 11g cluster, we often use the initialization file (pfile) under DBS to specify the actual spfile in the ASM
[Oracle@ol6-112-rac1 dbs]$ Cd/u01/app/oracle/product/126.96.36.199/db_1/dbs[Oracle@ol6-112-rac1 dbs]$ lsHc_acfsdb.dat hc_cdbrac_1.dat hc_cdbrac_2.dat initcdbrac_1.ora initcdbrac_1.ora.orig init.ora orapwacfsdb SPFILEACF Sdb.ora[
Label:1. View the database version SQL>Select from v$instance;
12.1. 0.2. 0 2, SYSDBA user login Sqlplus Sql>show PDBs con_id con_nameOPENMODE RESTRICTED---------- ------------------------------ ---------- ----------
2Pdb$seedREAD onlyNO3PdbcisREADWRITE NO4PdbidbREADWRITE NO SQL> A
Description of Oracle 12c CDB and PDB database startup and shutdown, 12 cpdb
In Oracle 12c, it is divided into CDB and PDB. Their startup and shutdown operations are as follows.
1 Container Database (CDB)
For CDB, the startup
. Note that if the user of the app has DBA authority, the data overwrite is not valid. We use the Sql*plus simulation application to use the same database user to implement data rewriting using the context. (actually different application users, using different context.) ） We use HR login to manually set the module to "HRMS". The data overwrite policy does not take effect when our module is set to a diffe
using the temporary tablespace 22.8 summary
Chapter 23rd pluggable Databases23.1 Understanding Pluggable Architecture23.1.1 Conversion Paradigm23.1.2 the meaning of backup and recovery operations23.1.3 Fine Tuning23.2 Creating a CDB23.2.1 creating a CDB manually using SQL commands23.2.2 using DBCA23.2.3 creating a CDB script from DBCA23.2.4 Check if the CDB has been created23.3 Managing the root container23.3.1 Connecting the root container23.3.
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