Current log sequence 1
6, change the archive mode to Archivelog
sql> ALTER DATABASE Archivelog;
7, Requery archive mode
sql> ARCHIVE LOG LIST
Database log Mode archive mode
AutoArchive enabled
Archive Endpoint Use_db_recovery_file_dest
The oldest online log sequence 1
Next Archive log sequence 1
Current log sequence 1
8, open the database
sql> ALTER DATABASE OPEN;
The database archiving mode Setup has been completed, querying its archive mode in addi
HashMap archiving-beyond yesterday's series, hashmap ArchivingJava HashMap
Read the source code to store an array of data:
transient Entry[] table;
Internal classes with internal key and value:
static class Entry
Therefore, the data structure of HashMap is the linked list structure under the array,
Public V put (K key, V value) {if (key = null) return putForNullKey (value); int hash = hash (key. hashCode (); int I = indexFor (hash, table. length); //
the database as DBA)
2) SQL> shutdown immediate; (close the database immediately)
3) SQL> startup mount (start the instance and load the database, but do not open it)
4) SQL> alter database archivelog; (change the database to archive Mode)
5) SQL> alter database open; (open the database)
6) SQL> alter system archive log start; (enable automatic archiving)
7) SQL> exit (exit)
Make a full backup because the backup logs generated in non-archive log mode
1. Differences between the archive log mode and the non-archive log ModeIn non-archive mode, only cold backup can be performed, and only full backup can be performed during recovery. data during the last full backup to system error cannot be recovered.Archive mode supports hot backup, Incremental backup, and partial recovery.You can use archive log list to check whether the archive mode is not the archive mode when the archive mode is in the status.2. Configure the database archive ModeChange no
The Oracle database has a connection redo log, which records changes to the database, such as insertion, deletion, and data update. All these operations are recorded on the online redo day.
The Oracle database has a connection redo log, which records changes to the database, such as insertion, deletion, and data update. All these operations are recorded on the online redo day.
Oracle archiving Mode
1. Check whether the oracle database is in archi
Today, companies and organizations are aware of the need to regulate electronic documents, comply with relevant regulations, meet legal evidence to find demand, and quickly find and retrieve historical data for e-mail, all of which require e-mail archiving storage and acquisition capabilities.messagesolution The cloud archiving system is a turnkey solution for cloud platform providers, based on the cloud pl
Oracle 11g Flashback Data Archive (flash back Data archiving) UNDO tablespace record rollback information although it can provide flash back query, but for a long time, this information will be overwritten. In fact, as long as the transaction is committed, it will become a writable object. Therefore, when performing a transient query, we will receive the 1555 error because we cannot find the undo block, and Flashback Data Archive is introduced in the
DB2 logs are divided into two modes: log loop and archive log, which are non-archive and archive modes. The following describes the two methods and their relationship with backup archiving settings.
1. Log Loop
This is the default mode, that is, non-archive mode. This mode only supports backup offline) offline backup, and DB2 needs to stop the service during the backup process.
View the database settings in DB2. If the following information is found$
Two kinds of strategiesArchiving and backup for a system, there are two different strategies that play two different, complementary functions. Backups are used for high-speed replication and recovery to reduce the impact of failures, personnel errors, or disasters, archiving to effectively manage data, retention of data, and long-term access and retrieval.
Archiving RequirementsArchive data range: Primarily
PHP extension-compression and archive extension-the Phar archive concept comes from the JAR archive of Java technology, which allows the use of a single file to package applications, this file contains everything required to run the application. This file is different from a single executable file, which is usually generated by a programming language, such as C, because the file is actually an archive file rather than a compiled application. Therefore, the JAR file actually contains the files th
This document explains the steps on how to create a DAP in sap bw, more information on what is archiving is covered in my archiving blog
How to create data archiving process based on adk Method
Step 1:Go to transaction rsa1 and right click on the info provider you want to archive and select "create data archiving pr
The method for setting the Oracle automatic archiving mode is not very complex. The following describes how to set the Oracle automatic archiving mode in detail, hoping to help you.
Oracle Automatic archiving mode setting (Automatic archival, which can be Enabled and Disabled). In this mode, the database starts an arch process and writes redo logs to the correspo
System Environment:
Operating System: RedHat EL55
Oracle: Oracle 11.2.0.1.0
Case:
The archive log space of the client database server is full and not found. After the DBA finds that the log switch is hang, the database is forcibly shut down, causing instance startup failure.
Error:
When archiving logs, the database is hang ......
16:56:02 SYS @ prod> alter system switch logfile;
Alarm log:
ORACLE Instance prod-Can not allocate log, archival required
Archiving for File Count ReductionNote:archiving should be considered a advanced command due to the caveats involved.
Archiving for File Count Reduction
Overview
Settings
Usage
Archive
Unarchive
Cautions and limitations
Under the Hood
OverviewDue to the design of HDFS, the number of files in the filesystem directly affects
Log archiving and data mining http://netkiller.github.io/journal/log.html Mr.Neo Chen (Chen Jingfeng),Netkiller, Bg7nyt China Guangdong province Shenzhen Khe Sanh Street, Longhua District, civil Administration518131+86 13113668890+86 755 29812080[email protected]> Copyright? Netkiller. All rights reserved. Copyright Notice Reprint please contact the author, please be sure to indicate the original source of the article and the author's information and
Oracle flash back data archiving can be used to automatically track and archive data in tables with flash back data archiving enabled. This ensures that the flash query can obtain the SQ of the database object version.
Oracle flash back data archiving can be used to automatically track and archive data in tables with flash back data
Object Archiving:
Concept:
Object archiving refers to writing objects to a file and saving them on the hard disk. When you re-open the program, you can restore these objects. It is also called object serialization and Object persistence.
Data persistence (in fact, there are three types)
1. NSKeyedArchiver -- Object Archiving
2, NSUserDefaults 3, attribute list
4
Based on the requirements of the Sarbanes-Oxley Act, Netease enterprise mail launched an archive system that complies with the Sarbanes-Oxley Act: Sarbanes-Oxley archive. Netease enterprise mail's Sarbanes-Oxley archiving function can effectively solve business disputes but lack relevant evidence. It can record and store important emails in real time, archive emails can be saved for a long time without being tampered. After an archive email is archive
Tags: Microsoft application office client history Local ArchiveThis helps you regain control of the organization's mail data without the need for personal storage (. pst) file, and allows users to store emails in the "ARCHIVE mailbox" that can be accessed through Microsoft Outlook 2010 and later and Microsoft Office Outlook Web app. In Microsoft Exchange Server 2013, local archiving provides users with a backup storage location for storing historic
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