Adding columns with default values to tables in Oracle (including new 12C features)
This is a problem that I have been paying attention.
11G has been improved on this issue, and 12C has some new features.
12C adds the new 11g feature in this regard.
Add a column in 11G and set the default value. Instead of changing
Add columns with default values in Oracle tables (including new 12C features) and oracle12c
This is a problem that I have been paying attention.
11G has been improved on this issue, and 12C has some new features.
For a discussion on the new features of 11g, refer to my blog http://blog.csdn.net/dbcrocodile/article/details/21170407
Oracle 12C joins a very innovative feature, pluggable database, that enables database (PDB) pull-out capabilities on the "container" (CDB) to improve system resource utilization and simplify the management and migration of large-area databases.now let's tryThe operations of the CDB and PDB for pluggable databases are:Basic information:Root container (CDB): CUPPluggable Database (PDB): TEATo start the root c
. Enable administrative share for C $ (please check with your System Admin to do this or see Microsoft document Http://suppor t.microsoft.com/kb/314984) 2. Check that it was OK: -net use \\-the current user (i.e. user in Administrator Gr OUP) should has all privileges on the default share 3. Retry the installation 4. Remove the administrative share again B) Check if Windows services "Oracleremexecservice" is running Check if Windows services "Oracleremexecservice" is running,
Tags: des style blog http color io os using ARThis series of articles is a summary of some of the new features of Oracle database 12c, including database management, RMAN, high availability, and performance tuning, Syed Jaffer Hussain.1. Online renaming and repositioning of active data filesUnlike previous versions, the migration or renaming of data files in the Oracle
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 container23.3.2 displaying information for the current conn
#!/bin/bash# #oracle: Start/stop Oracle Database 11g r2/12c## chkconfig:345 - Ten# description:the Oracle Database Server is a RDBMS created by Oracle corporation## processname:oracle./etc/rc.d/init.d/Functionslockfile=/var/lock/subsys/Oraclepath= $PATH: $HOME/Binoracle_use
Prior to the Oracle 12c version, the VARCHAR2 and NVARCHAR2 data types had a maximum length of 4000, with the extended maximum of 12c versions supported to 32767, or 32KB, and parameter Max_string_ The size is the maximum length of the extended data type that controls the extended datatype:
Standard: Represents the length limit before
The entire installation of Oracle cloud control 12c is more complex, just the choice of installation path, login password, port number and many other configurations are confusing, dizzying. This article describes how to get installed after the installation of the various types of port number, URL and how to start, close the cloud control and so on for your reference.For the installation configuration of clo
Label:Installing Oracle 12c on Windows 7 64-bit does not have a set character set, using the operating system default character set: we8mswin1252, modify the character set to: ZHS16GBK. Because the process is irreversible, you first need to back up the database. 1. Fully prepared database 2. Querying the current character set PARAMETER VALUE
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Tags:control1.0targedbf table spaces archappend backup strategy home Oracle 12c Backup and recovery strategy (Rman Backup [Open Archive/control file/data File/Archive log]): Backup strategy: * Make a full backup of the database (including all data and read-only tablespace) every six months * once a week level 0 backup * One level backup per day * Pre-backup set R Man parameters: Configure Controlfile auto
Label:Before 12c, if you want to achieve the automatic growth of column, usually through the sequence, but this problem is resolved in 12c, Oracle deferred the identity column function, which solves the previous problem perfectly, here is my simple test, For reference! Sql>Alter pluggable databaseAllOpen
Pluggable database altered. Sql>Select Name,open_modeFrom
New Features of Oracle 12C-online migration of table partitions or subpartitions
Oracle 12c: new feature-online migration of table partitions or subpartitions. It is no longer necessary to migrate table partitions or subpartitions to different tablespaces in Oracle
I used to have an idea that I just wanted to create an index on one or a few of these partitions, and that the other partitions didn't want to be created, and neither the local nor global index was able to achieve that requirement, but the partial Global was introduced from Oracle 12C /local Indexes for partitioned tables solves the problem by creating a local index or global index on the specified partitio
move datafile '/u01/app/oracle/oradata/cdb/pdb/pdb_users01.dbf ' to '/u01/app/pdb_user01.dbf ';Database altered.Sql> Select Name,status from V$datafile where file#=10;NAME STATUS-------------------------------------------------------------------------------- -------/U01/APP/PDB_USER01.DBF ONLINESuccess!Summary: Although Oracle 12c log files are shared, CDB and e
Oracle RAC 10.2.0.5 Install For redhat 5.8 (use raw device)
Because the customer's database needs to be patched, similar test environments are installed. You must first install Oracle RAC 10.2.0.1 and then upgrade it to 10.2.0.5. Because I have many articles about installation, this article only describes the key steps
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