Tags: MoS unique oracl product Memory server app not strEnvironment is 12.2.0.1 version, Oracle Data guard Main Library patrol found alert with abnormal error: 2018-07-10t13:24:04.710366+08:00Errors in FILE/U01/APP/ORACLE/DIAG/RDBMS/DWDB/DWDB1/TRACE/DWDB1_M000_4455.TRC:Ora-00245:control file backup failed; In Oracle RAC, Target might not is on shared storageRemov
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----------
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 and requirements of this "tag delete" in the case of minimal changes to existing code.Befor
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
Tag:tabreadossmanage copy optionsonslinebase $ Sqlplus '/as sysdba ' sql*plus:release 12.1.0.1.0 Production on Tue June 13:03:06 2015Copyright (c) 1982, Oracle. All rights reserved. Connected to:oracle Database 12c Enterprise Edition Release 12.1.0.1.0-64bit productionwith The partitioning, OLAP, Adva nced Analytics and Real application testing optionssql> show Con_name; Con_name---------------------------
Simple CDC, the simplest CDC. Here, each CDC table change is captured independently, and there is no need to consider the consistency of data between tables that have primary foreign key reference relationships.1 Environment PreparationSOURCE table: Odi_src. DEPT Target table: Odi_tag. DEPT Configuration topology See the creation and configuration of the ODI studio topology (Oracle) Model Reverse engineering See:
) (host=oracle12c) (port=5500)) (Security= (my_wallet_directory=/u01/app/ Oracle/admin/orcl/xdb_wallet)) (presentation=http) (Session=raw))Services Summary ...Service "7351E8AE5372218EE0539B6BA8C08D05" has 1 instance (s).Instance "ORCL", status ready, have 1 handler (s) for the This service ...Service "ORCL" has 1 instance (s).Instance "ORCL", status ready, have 1 handler (s) for the This service ...Service "Orclxdb" has 1 instance (s).Instance "ORCL"
First, the environmentService side: Oracle 12.2.0.1 RACClient: Less than Oracle 11.2.0.3Second, the phenomenonWhen using a less than Oracle 11.2.0.3 client version connection to the Oracle 12.2.0.1 RAC database "Ora-28040:no matching authentication protocol"Third, solve the problemMethod One: According to the official
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
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.
5.6.7.8.9. Note that the password set he
The problem originates from a 12c database of the customer and needs to be booted to a non-real time apply mode, but the discovery is performed:ALTER DATABASE recover managed standby database cancel;ALTER DATABASE recover managed standby database disconnect from session;
After that, the database is still working in the real time apply mode.
Went to the alertlog for a while, found the answer:
Thu June 09 12:16:03 2016Errors in FILE/CUST/MYDB/RDBMS/
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