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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 data type. In order to enable extended character size, you must set the initial database
customizing local data definitions. Use this tool to view the creation language, character set, and so on. Key features include language settings, geography settings, character set settings, and syntax settings. Net configuration Assistant: typically configured for network connections, this tool can be installed if a listener installation fails during installation because of some problems. Net Manager: Above is the configuration, this is the management.5. Extended Reading5.1,
Rman can perform db,tablespace,datafile,block level and TSPITR recovery in previous versions of 12C, 12C introduces table-level recoveryA single table can be recovered without opening the flashback.example, create a tableSql> alter session set CONTAINER=PDB2;Session altered.Sql> CREATE TABLE Frank.t1 as SELECT * from Dba_tables;Table created.Backing Up the databaserman> backup Database;Starting backup at 16
12C Oracle Data Guard Repository Today exception2018-07-05t21:31:32.291970+08:00GEN0 (ospid:75371): Terminating the instance due to error 4722018-07-05t21:31:32.293376+08:00System State Dump requested by (Instance=1, osid=75371 (GEN0)), summary=[abnormal instance termination].System state dumped to trace file/u01/app/oracle/diag/rdbms/dwjrstdydb/dwjrstdydb/trace/
= (address = (PROTOCOL = TCP) (HOST = RAC2-VIP) (PORT = 1521))Lunarrac2_local_net2 = (DESCRIPTION = (address = (PROTOCOL = TCP) (HOST = RAC2-ADG-VIP) (PORT = 1522))Lunarrac_remote_net1 = (Description_list = (DESCRIPTION = (address = (PROTOCOL = TCP) (HOST = Rac-scan) (PORT = 1521)))Lunarrac_remote_net2 = (Description_list = (DESCRIPTION = (address = (PROTOCOL = TCP) (HOST = Racadg-scan) (PORT = 1522)))[ORACLE
Tags: oracle12cPrior to installing the 12c version, recent exercises have found no tables for Scott users and 11g emp,dept, etc. Then try to unlock the user and find that the user does not existsql> alter user Scott account unlock; Alter user Scott account unlock * ERROR @ Line 1: Ora-01918:user ' Scott ' does not existCreate user manually, error, and 11g not quite the sameSql> create user Scott identified by Orac
In 12C, the VARCHAR2,NVARCHAR2 and raw types extend from previous 4K to 32KAfter upgrading to 12C, the parameter max_string_size default value is standard, that is, does not change the size limit of VARCHAR2, NVARCHAR2, and raw data types, and 11g is consistent.sql> Show parameter max_string_sizename TYPE VALUE------------------------------------------- ---------------
[Translated from mos] in Oracle db 12c, The alert_sid.log permission is changed every time the log is switched. 12calert_sid.log In 12c, The alert_sid.log permission is changed each time the log is switched. Source:Alert log file's permissions Change with every log switch in 12c (Doc ID 1637367.1) Applicable:Oracle Dat
settings, character set settings, and syntax settings. Net configuration Assistant: typically configured for network connections, this tool can be installed if a listener installation fails during installation because of some problems. Net Manager: Above is the configuration, this is the management.5. Extended Reading5.1, Oracle 12c simple jdbc Use 5.2. Configuration and use of
Tags: NET error online update HTTP upgrade error GES debugYesterday afternoon, the implementation reported an Oracle error ora-03137said that the database in 11g no problem, upgrade to 12c, the error.Local debugging, see after executing SQL, reported exception, as follows:Execute SQL in a 12c database, no problem.The suspicion is that ASP. NET connection oralce12
/Tmp/OraInstall2018- .-14_Geneva- the-57PM. Please wait ...[[email protected] Disk1]$Start the Oui interface hereNote: The path in is not the same as the environment variable set above, because the server for the environment variable and the server that is installed are not the same.1) Select Installation Option2) Specify installation Details3) Summary4) Install Product5) FinishResources https://docs.oracle.com/goldengate/c1230/gg-winux/OGGIN/installing-
Record the restoration of the ORACLE 12C CDB database when the current redo is lost. ORACLE 12C redo exception recovery test-some pdb are not open normallyIn order to verify the restoration of the ORACLE 12C CDB database when redo
, arguments: [4194], [61], [4], [], [], [], [], [], [], [], [], [] Process id:5932 Session id:242 Serial Number: 3 idle> ALTER SYSTEM SET undo_management= ' Manaul ' scope=spfile; The system has changed. Idle> SHUTDOWN IMMEDIATE; ORA-01109: Database not open The database has been unloaded. The ORACLE routine has been closed. idle> startup Mount; The ORACLE
Label:12c, each log switch will change the permissions of Alert_sid.log From:Alert log file ' s permissions change with every log switch in 12c (Doc ID 1637367.1) Suitable for:Oracle database-enterprise edition-version 12.1.0.1 and laterInformation in this document applies to any platform. Symptoms: When trying to set the group write bit in the OS Permissions for the alert log file it gets reset after every
1. View host and database information [[emailprotected] ~]$ sqlplus/as sysdbasql*plus:release 12.2.0.1.0 Production on Tue May 01:19:35 2018copyright (c) 1982, Oracle. All rights reserved.connected to:oracle Database 12c Enterprise Edition Release 12.2.0.1.0-64bit production nbsp Sql> set linesize 300set pagesize 999select * from V$version;bannercon_ ID-------------------------------------------------------
Tags: window8 64-bit + Oracle1) Install Oracle 12c 64-bit2) Installing the 32-bit Oracle Client (INSTANTCLIENT-BASIC-NT-12.1.0.1.0.ZIP)Download Instantclient-basic-win32-11.2.0.1.0.zip, must be the Win32 version, the Oracle official website downloads, unzip it to the Oracle
Server A installs the Oracle 12c 64-bit database, and Machine B accesses the Oracle database.Get ready:1. Download Instantclient-basic-nt-12.1.0.2.0.zip,:http://pan.baidu.com/s/1c04lzso2. Download Plsql,:http://pan.baidu.com/s/1bnhkdojInstallation steps1. Installing the Orcle ClientUnzip the downloaded instantclient-basic-nt-12.1.0.2.0.zip to the directory of the
:$ORACLE_HOME/bin #设置系统环境LANG=zh_CN.UTF-8export PATH LANG NLS_LANG ORACLE_BASE ORACLE_HOME ORACLE_SID #使环境生效Oracle User Resource LimitsUsing the Pam_limits authentication module#通过修改pam来达到控制 oracle的目的vim /etc/pam.d/login#在其中添加session required /lib/security/pam_limits.sosession required pam_limits.soMemory limits and file limitsvim /etc/security/limits.conf#在最后添加
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 and shutdown methods are the same as the traditional ones. The specific syntax is as foll
Oracle transaction-based temporal tables, under 11g and 12C, can be seen when statistics on temporary tables are collected, the former records are emptied, the latter is not, which is an important distinction. In the company environment with 12C, in the field with 11g, using temporary table will cause the time is slow, before I have a post http://blog.csdn.net/st
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