oracle database 12c training

Before 12c, if you want to achieve the automatic growth of column, usually through sequence, but this problem is solved in 12c, Oracle postponed the identity column feature, which perfectly solves the previous problem, the following is my simple test, For reference! Sql> Alter pluggable database all open;Pluggable

Oracle 12c In-Memory Oracle introduced the In-Memory and columnar compression option In 12c, which greatly improves query performance. Here, we can see how much performance can be improved in the same query through a comparison. 1. allocate Memory to In-Memory firstSQL> show parameter inmemory;NAME TYPE VALUE----------

-limits.confOracle Soft Nproc 2047Oracle Hard Nproc 16384Oracle Soft Nofile 1024Oracle Hard Nofile 65536Oracle Soft Stack 10240Oracle Hard Stack 32768STEP4: Adding usersGroupadd--gid 54321 OinstallGroupadd--gid 54322 dbaGroupadd--gid 54326 OperGroupadd--gid 54327 BACKUPDBAGroupadd--gid 54328 DGDBAGroupadd--gid 54329 KMDBAUseradd--uid 54321--gid oinstall--groups dba,oper,backupdba,dgdba,kmdba Oracleecho "Oracle" |PASSWD--stdin OracleSTEP5: Setting up a

Oracle 12C multi-index with the same column In Oracle 12c, Oracle provides the ability to create different indexes on the columns of the same table for SQL Performance Optimization, but only one index is visible. The following is an exampleConnected:Oracle

Environment: WIN7 64-bit + Oracle 12c (12.1.0.2.0)Mode: Graphical InstallationLog on to the system as an administrator:1 Double-click the setup.exe in the database directoryRemove the check for "Receive security updates" and click Next.2 Wait for some time to appearI have an error INS-30131 here:For example, after starting the Server service, normal:3.

session set CONTAINER=EHRPDB;--Switch back to the root containerAlter session set Container=cdb$root;--2 Creating pluggable Databases--2.1 Cloning seed ContainerCreate pluggable Database cpcdbAdmin user Cpcadm identified by Cpcadmfile_name_convert= ('/oracle/app/oracle/oradata/edw/pdbseed ', '/oradata/edw/cpcdb/datafile/');--2.2 Creating a

This article mainly introduces the basic management of CDB and PDB, data source Oracle official.Basic concepts:Multitenant Environment: Multi-tenant environmentCDB (Container database): DB containerPD (Pluggable database): pluggable databasesCDB vs. pdb diagramCOMMON users (ordinary users): often built on the CDB layer, user name in C # #或c # #开头;Local Users: Onl

sentence is manually added, This means that the server from 10.62.1.1-10.62.1.254 can use our ntpserver to synchronize time.The server 192.168.146.225 is also manually added, indicating the IP on the LAN as the NtpServer, and the last two lines of the configuration file serve to provide time services to the client in local time when the server loses contact with the public time server. #chkconfig ntpd on/configure NTPD service boot itself boot #service ntpd start/start ntpd service Install grid

SOURCE end: 12C RAC primay backup fileTarget side: 12C Single InstancePartial Summary:1 Pfile Modification2 Disable Redo Thread N3 Drop logfile Group N4 Rename LogFile5 Cancel Log Remote transferIf primary is in Maximum availablity mode, the control file will detect log_archive_dest_n in case the log transfer is normal? So without processing will be an error:LGWR (ora-16072): Minimum of 1 LGWR standby

/dwjrdbpdb/undotbs01.dbf '2018-07-05t23:42:22.481081+08:00Errors in FILE/U01/APP/ORACLE/DIAG/RDBMS/DWJRSTDYDB/DWJRSTDYDB/TRACE/DWJRSTDYDB_M000_129832.TRC:Ora-01110:data file One: '/u01/app/oracle/oradata/dwjrstdydb/dwjrdbpdb/users01.dbf ' Refer to MOS Documentation:ORA-01110 for all Files in Standby Database (document ID 2322290.1) ChangesNew or upgraded Standby

Database version The code is as follows Copy Code BANNER con_id-------------------------------------------------------------------------------- ----------Oracle Database 12c Enterprise Edition release 12.1.0.1.0-64bit Production 0Pl/sql Release 12.1.0.1.0-production 0CORE 12.1.0.1.0 Product

Installing OracleI use the Win10 64-bit, the official website downloads 64 Oracle 12c, two files.Unzip the first file after installation, but install to half error, prompting missing files. Later found that the original two files to be extracted separately, extracted according to the directory merged together.Install again, install to 88% and the jammed won't move. I thought the installation failed again, s

A table access by index ROWID batched may appear in the start of an Oracle 12C execution plan, official explanation: Table access by index ROWID Batched:means that Databa SE retrieves a few rowids from the index, and then attempts to access rows in blocks order to improve the clustering and re Duce the number of times this database must access a block. Main meani

The concept of change sets is introduced in conformance CDC. A change set can include several tables that have relationships with each other, such as a primary foreign key reference relationship. The CDC can guarantee data consistency when capturing and releasing changes in a change set. This exercise describes how to use a CDC that guarantees consistency.1 Environment PreparationSOURCE table: Odi_src. Dept,odi_src. Emp Target table: Odi_tag. DEPT, Odi_tag. Emp Configuration topology See the cre

= ' GMT ';-Make datafiles in the PDB offline/online and make storage changes.ALTER pluggable DATABASE datafile '/u01/app/oracle/oradata/cdb1/pdb1/pdb1_users01.dbf ' OFFLINE;ALTER pluggable DATABASE datafile '/u01/app/oracle/oradata/cdb1/pdb1/pdb1_users01.dbf ' ONLINE;ALTER pluggable

. Executes the root.sh script after the installation is complete.3.1. Run the installation script$Grid _home/gridsetup. SH3.2. Select Configure Grid Infrastructure for a New Cluster and click Next3.3. Select Configure an Oracle Standalone Cluster, then click Next3.4.scan-name to be the same as Scan-ip in/etc/hosts, cancel the GNS and click Next3.5. Choose Add node, fill in Public-ip and virtual-ip hostname, then select all nodes, click SSH connectivit

Solution for installation of oracle 12c to 69% on windows, 12c69%1. Environment 1.1 software environment and Installation Method Software environment: Win7_64bit + oracle 12c_64bit (12.1.0.2) Installation solution: Only database software is installed, and a single instance database