committed on the master database depends on whether the transaction is accepted on standby and whether the log data on the application is applied. Therefore, data may be lost during Failover. As a DBA, we need to consider how to protect data and reduce data loss (Gap) as much as possible when the site of the Primary site permits (because the fault of the Primary is unknown ).This article mainly demonstrates the Failover process.
References:
Important configuration parameters of
1. Log in to PL/SQL DeveloperThis omits the installation steps for the Oracle database and PL/SQL Developer, and note that when you install the PL/SQL Developer software, do not install it under the program Files (x86) directory o
Tags: Oracle 11gTest environment: Win7 64-bit flagship +JDK7 (64-bit) Installed software: Oracle 11g R2 64-bit Follow the online general tutorial installation completed database, found a bunch of problems, close up this note. 1, using SQL Developer login, error: Because the
If the OS is a Windows 7 64-bit system, the Oracle version for Oracle 11g 64 installs PL SQL Developer please refer tohttp://myskynet.blog.51cto.com/1471053/623957 HTTP://SUPPORT.MICROSOFT.COM/KB/2585547/ZH-TW1, PL/SQL
the database. Net Extension Service. (must not be started) Oracleoradb11g_home1tnslistener: Listener service, the service is only needed when the database requires remote access. (not required to start, detailed below). ORACLESERVICEORCL: The database service (DB instance), which is the Oracle Core service, is the basis for database startup, and only if the service is started, the Oracle database can start
).
OracleServiceORCL: Database Service (database instance) is the core service of Oracle. It is the basis for database startup. Only when the service is started can the Oracle database be started normally. (Must be started)
What services need to be started during development?
For beginners, if you only use the SQL * plus provided by
Oracle 11g New Features
09-10-10Oracle 11g new feature: Rman backup skips the free interval
09-10-10Oracle 11g new feature: Server Result Cache Test
09-10-10Oracle 11g new feature: One of Result Cache
09-10-10Oracle 11g new f
:
Connected to:
Oracle Database 11g Enterprise Edition release 11.2.0.3.0-64bit Production
With the partitioning, OLAP, Data Mining and real application testing options
Sql>
third, the database builds the storehouse
Enter the command DBCA in the current terminal window and eject the library interface.
[Oracle@local
Oh, spent one hours, around the 11g installation toss good. It took a long time to toss the SQL Developer, and finally it was done. OK, first summarize the installation steps, hope to the rear of the children's shoes to improve the installation efficiency. Oh.
First, Oracle download
Note that
transactions in a Microsoft Transaction Server MTS, com/com+ object, and distributed environment. (must not be started)5. Oracleoradb11g_home1clragent:oracle part of the database. Net Extension Service. (must not be started)6. Oracleoradb11g_home1tnslistener: Listener service, service is required only when the database requires remote access. (not required to start, detailed below).7. ORACLESERVICEORCL: Database service (DB instance), which is the Oracle
If the OS is a Windows 7 64-bit system, the Oracle version for Oracle 11g 64 installs PL SQL Developer please refer tohttp://myskynet.blog.51cto.com/1471053/623957 HTTP://SUPPORT.MICROSOFT.COM/KB/2585547/ZH-TW1, PL/SQL
New Features of Oracle 11g
(36 in total)
I. Database Management
·1. Database Replay)
This feature can capture the load of the entire data and pass it to a test database created from the backup or standby database, and then repeat the load to test the system tuning effect.
·2. SQL replay (sqlreplay)
Similar to the previous feature. However, it only capt
default, both attributes are set to 10.1. to use new features, you must promote these attributes.
Setting the compatibility attribute to an earlier version allows the client to access a later version of the disk group. For example, the Oracle 10g client can access the Oracle 11g ASM disk.
The Compatibility attribute settings of the ASM and
BKJIA featured translations] in the previous articles, BKJIA briefly described several new features of Oracle 11g R2, referring to the Oracle 11g topic ). Finally, let's make a summary to introduce some of the new features in Oracle 11g
wasn't restored from a sufficiently old backupOra-01110:data file 1: '/OPT/ORACLE/ORADATA/TPY100/SYSTEM01.DBF 'Is the standby monitoring is not open, using lsnrctl start, start monitoring, and then open the database will not error.sql> ALTER DATABASE recover managed standby database using current logfile disconnect from session;The test has the following statement:Sql> select sequence#,applied from V$archived_log;
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