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[1] 1. select name, log_mode from v $ database; NAME LOG_MODE ------------------ ------------------------ query noarchivelog 2. use the archive log list Command Database log mode No Archive Mode Automatic archival Disabled Archive destination/data/oracle/product/10.2.0/db_1/dbs/arch Oldest online log sequence 739 Current log sequence 741 what is Oracle

Oracle Archive Log configuration query Archive Log is a non-active redo Log backup. archive logs can be used to keep all redo history records. When the database is in ARCHIVELOG mode and the log is switched, the background process ARCH will save the redo log content to the archive log. when a media failure occurs in th

Archive Log (Archive log) a non-active redo log backup. By using the archive log, you can keep all the redo history, when the database is in Archivelog mode and log-switched, and the background process arch will save the contents of the redo log to the archive log. When the database fails with media , the database can

Changing the archive mode in the RAC environment the archive mode switching is slightly different from that in a single instance, mainly because of the differences in shared storage. In this case, we can switch the RAC database to a non-cluster state and switch the archive mode on an instance to complete the archive Mo

New Features of Oracle 11g Flashback Data Archive instance, 11 gflashback Flashback Data Archive (flash back log archiving) is actually used to save undo Data for a long time. For some important tables, you can customize the retention period of their historical records, its behaviors are very similar to those of the undo tablespace, and they are completely transparent when used. users do not know whether it

The oracle OEM manager displays visualized logs. After we manually clear the files in the archive directory, these records are not cleared from the controlfile, The oracle OEM manager displays visualized logs. After we manually clear the files in the archive directory, these records are not cleared from the controlfile, The Oracle OEM manager displays visualized logs. After we manually clear the files

There are three ways to persist iOS data: List of properties (custom property list, Nsuserdefaults) Archive (Nskeyedarchiver) Database (SQLite, Core Data, third-party class libraries, etc.) The following is a main introduction to an archive nskeyedarchiver. Archive (aka serialization), convert objects to bytecode, save them to disk a

I. Check whether the Oracle database is in archive mode:1. select name, log_mode from v $ database;NAME LOG_MODE------------------------------------------QUERY NOARCHIVELOG2. Use the archive log list CommandDatabase log mode No Archive ModeAutomatic archival DisabledArchive destination/data/oracle/product/10.2.0/db_1/dbs/archOldest online log sequence 739Current

VIII. RAC archive 1. archive storage method Archived logs in RAC can be stored in the following ways: In initialization parameter file, you must set the following parameters: Sid1.log _ archive_dest_1 = (location =/arc_dest_1) Sid2.log _ archive_dest_1= (Location =/arc_dest_2)1.1 respectively stored on each node In this case, recover will cause the archived log replication problem, and the same directory sh

Tags: start note DISM redo lease bit file post MoDWhat is archive modeThe Oracle database has an online redo log, which records changes made to the database, such as inserting, deleting, updating data, etc., which are recorded in the online redo log. A generic database must have at least 2 online redo log groups. When an online redo log group is written full, a log switch occurs, the online redo log Group 2 becomes the currently used log, when the onl

The archive log (Archive log) is a non-active redo log backup. By using archived logs, you can keep all the redo history, when the database is in Archivelog mode and log-switched, Background process Arch will save the contents of the redo log to the archive log. With data file backups, archive logs and redo logs to ful

To introduce the Phar file concept and usage of PHP development, we know that a PHP application is often composed of multiple files, it is very convenient to centralize them as a file for distribution and operation, but there are many examples, but in the design of the WEB Environment for PHP, and the JAR Archiving is different because the Phar archive can be processed by PHP itself, so you don't need to use additional tools to create or use it, and y

Application ScenariosKeeping a large number of small files in our HDFs (and of course not producing small files is a best practice) will make Namenode's namespace a big deal. The namespace holds the Inode information for the HDFs file, and the more files it needs, the greater the Namenode memory, but the memory is limited after all (this is the current Hadoop mishap).The following image shows the structure of the Har document. The Har file is generated through MapReduce, and the source file is n

The most well-known archive/compression tool in Linux In many cases, sending or receiving large files and images over the Internet is a headache. The compression and decompression tools can solve this problem. Next, let's quickly browse some open-source tools in Linux that make our work easier.Tar Tar is derived from 'tape archiver, which is initially used to archive and store files on tapes. Tar is a GNU

The Oracle OEM manager displays visualized logs. After we manually clear the files in the archive directory, these records are not cleared from the controlfile, that is, oracle does not know that these files no longer exist! In this case, if we want to manually clear it, we can try this method after experiment: 1. Enter rman2. connect target/3. crosscheck archivelog all;4. delete expired archivelog all;At this time, we will not see it again in the OEM

to see if an Oracle database is in archive mode1.select Name,log_mode from V$database; NAME log_mode------------------------------------------QUERY noarchivelog 2. Use archive log LIST command Database log MODE No Archive Mode Automatic Archival Disabled Archive destination/data/oracle/product/10.2.0/db_1//dbs/arch old

To ensure that the Oracle database works normally in archive mode, perform the following settings:: 1. Set the database to archive If the database archive mode is not enabled, the query displays the following information (non-archive mode ): 1. query the current database mode SQL>

1.select Name,log_mode from V$database; NAME log_mode------------------------------------------QUERY noarchivelog 2. Using the archive Log LIST command Database log Mode No Archive Mode Automatic archival Disabled Archive destination/data/oracle/product/10.2.0/db_1//dbs/arch Olde St Online log sequence 739 current log sequence 741 edit this section what is Oracle

Concepts and usage of phar files in archive format for PHP development [Create, use, unpack and restore and extract] This document describes the concept and usage of archive phar files in PHP development. We will share this with you for your reference. The details are as follows: A php application is often composed of multiple files. It is very convenient to centralize them into one file for distribution a

Flash back archive (11G new feature) Stay away from ORA-01555 errors 1.1.1.1 flash back Archiving The previous flash back is implemented based on undo flash back, because our flash back is not sure of time, so it will lead to ORA-01555 (snapshot is too old or overwritten), ORA-01466 (table definition is changed), ORA-08180 (no snapshot) and other errors. 1.1.1.1.1 create a tablespace. The default size is 500 mb. SQL> CREATE TABLESPACEhis_data_1 datafi