oracle 12c new features for dba arup nanda

Learn about oracle 12c new features for dba arup nanda, we have the largest and most updated oracle 12c new features for dba arup nanda information on alibabacloud.com

Oracle 12c new features (for DBA)

One: Multitenant Architecture (12.1.0.1)Multi-tenant architecture is the new heavyweight feature of Oracle 12c (12.1), built-in multi-tenancy (multi-tenancy), a container database (container) that can hold multiple pluggable Databases, Each pluggable database is independent of the other pluggable database.For external applications and developers, pluggable databa

Summary of the new features of Oracle 12c on business impact (1)

Summary of the new features of Oracle 12c on business impact (1) 1. invisible fields In Oracle 11g R1, Oracle introduces some good enhancement features in the form of invisible indexes

Oracle 12C new features table partition with asynchronous Global index asynchronous maintenance (once add, truncate, drop, spilt, merge multiple partitions)

------------------------- ------------------------- -------- ---------- -----------P_andy idx_pandy_id unusable 0 1--Rebuilding the indexsql> ALTER index IDX_PANDY_ID rebuild;Index altered.--View index statusSql> Select Table_name,index_name,status,blevel,leaf_blocks from user_indexes where index_name = ' IDX_PANDY_ID ';table_name index_name STATUS Blevel leaf_blocks------------------------- ------------------------- -------- ---------- -----------P_andy idx_pandy_id VALID 0 1--Truncate multiple

New Oracle 12C features online renaming, migrating active data files

-----. 1 Oracle Oinstall 272637952 may 04:30 system01.dbf-rw-r-----. 1 Oracle Oinstall 67117056 may 07:02 temp01.dbf-rw-r-----. 1 Oracle Oinstall 104865792 may 04:30 undotbs01.dbf-rw-r-----. 1 Oracle Oinstall 14426112 may 04:10 users01.dbf-rw-r-----. 1 Oracle Oinstall 525107

Oracle Database 12c New features Summary (i)

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, th

Oracle 12C new Features-pluggable database feature

--------------------------------------------------------------------------------/oracle/app/oradata/cup/datafile/o1_mf_system_bch07kvz_.dbf/oracle/app/oradata/cup/datafile/o1_mf_sysaux_bch020oo_.dbf/oracle/app/oradata/cup/datafile/o1_mf_undotbs1_bch0d2on_.dbf/oracle/app/oradata/cup/datafile/o1_mf_users_bch0d15n_.dbfTo

Oracle 12C r2-new features-pdb disk I/O (iops,mbps) resource management

Oracle 12C r2-new features-pdb disk I/O (iops,mbps) resource managementIn previous versions, there was no easy way to control the amount of disk I/O used by a single PDB. As a result, a PDB may run out of disk I/O and affect the performance of other PDB in the same instance. The Or

Invisible fields for new features of Oracle 12c

; INSERT INTO invisible_t (ID,NAME,PASSWD) VALUES (1, ' Andy ', 1);1 row created.sql> INSERT INTO invisible_t (Id,name) VALUES (2, ' andy02 ');1 row created.3. Query statusSql> select * from invisible_t;ID NAME---------- --------------------1 Andy2 andy02Sql> select Id,name from invisible_t;ID NAME---------- --------------------1 Andy2 andy02Sql> select id,name,passwd from invisible_t;ID NAME PASSWD---------- -------------------- --------------------1 Andy 12 andy024. Modify field to visible or

Table in Oracle adds a discussion with a default value column (including 12C new features)

has been strengthened again, we can not set the NOT NULL here, greatly reducing the possible error operationSee the following experimental processCREATE table T, where more than 1 million rows of data.Sql> Select COUNT (*) from T; COUNT (*)---------- 1454256Add a column directly to the table (not set NOT NULL)Sql> ALTER TABLE t add MRDAI1 number default 10000; Table altered. elapsed:00:00:00.03The speed is swift. And, of course, as in 11G.After the setting is complete, if it is a newly inser

Summary of new features in Oracle 12C SQL

Summary of new features in Oracle 12C SQL Multiple indexes on the same field Before Oracle 12c R1, a field cannot have multiple indexes in any form. Some may wonder why a field usually requires multiple indexes. In fact, there are

Oracle 12C new features Sqlplus view the history command

reserved Records is 100Sql>set History 3;7. View Hist retained RecordsSql> hist list;1 show Con_name2 show parameter version;3 Show hist;Description: The number of records retained is calculated by command rather than by line count.8. Run the specified recordSql> hist;1 Select sysdate from dual;2 show Con_name3 Select date from dual;Sql> hist 2 run;Con_name------------------------------Cdb$root9. Edit the previous commandhist 1 edit;Description: You can operate like Linux VI and edit the retain

Extended data type for Oracle 12C new features (extended

Oracle 12C new Features-extended data type, in 12c, the size of data types such as VARCHAR2, NAVARCHAR2, and raw are extended from 4K and 2K bytes to 32K bytes, compared to earlier versions. As long as possible, the size of the extended character decreases the use of the LOB

Add columns with default values in Oracle tables (including new 12C features) and oracle12c

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

New features of Oracle 12C-sequence

(2, Seq_session.nextval); SQL>Select* fromSCOTT.GTT; ID Seq_number---------- ----------1 3 2 4SQL>Continue the test.--end of session, sequence value will be resetSql>conn tiger/Tigersql>drop synonym GTT; SQL>drop synonym seq_session; SQL>create synonym GTT forSCOTT.GTT; SQL>create synonym Seq_session forscott.seq_session; SQL>Select* fromgtt;no rows Selectedsql>sql> INSERT INTO GTT values (1, Seq_session.nextval); sql> INSERT into GTT values (2, Seq_session.nextval);-I

Adding columns with default values to tables in Oracle (including new 12C features)

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

New Features of Oracle DB 12c: raw device bare devices are no longer supported, oracle12c

New Features of Oracle DB 12c: raw device bare devices are no longer supported, oracle12c New Feature of Oracle DB 12c: raw device is no longer supported. Reference:Announcement of De-S

New Features of Oracle 12C-online migration of table partitions or subpartitions

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 necessar

In-database archiving of Oracle 12c new features (In-database archiving)

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

Oracle 12c new features VARCHAR2 length maximum support up to 32767

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

Oracle 12C new features DB default character set Al32utf8, PDB supports different character sets

One, DB default character set Al32utf8Specify the database character set when you create the database. Starting from Oracle Database 12c Release 2, if you use Oracle Universal Installer (OUI) or Oracle database Configuration Assistant (DBCA) to create a database and then the default database character set used is the U

Total Pages: 3 1 2 3 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.