smarsh archiving

Dictionarywithcontentsoffile:dictionarypath];NSLog (@ "%@", getdictionary);-----------------------------------------------NSData (binary stream) file write------------------------------Data.txt written under TEM1. Get the road strength of the TEMNSString *tmppath = Nstemporarydirectory ();2.data.txt Stitching to TmppathNSString *datapath = [Tmppath stringbyappendingpathcomponent:@ "Data.txt"];3. Preparing the NSData object for writingNSString *string = @ "Uncle, let's have a date!";NSData *data

log files. The Oracle database must contain at least two log files to ensure that one pair is available for writing, and the other is used for archiving (if the database runs in archive mode ). Online Redo Log Switching Oracle Database uses only one online redo log file at a time to store records written from the redo log buffer. The online redo log file to which Log writer (LGWR)Process is actively writing is called CurrentOnline redo log fil

instances are also called redo threads. In a single-instance environment, only one instance accesses the database, so only one redo thread is running. In the Oracle RAC environment, two or more instances access the database concurrently. Each database instance has a redo thread. Each instance has a separate redo thread to avoid competition for unique online redo log files. Online redo logs generally contain two or more log files. The Oracle database must contain at least two log files to ensure

archived.Use channel ORA_DISK_1Use channel ORA_DISK_2Channel ORA_DISK_1: Start the compressed archiving log backup setChannel ORA_DISK_1: archiving logs in the specified backup setInput archiving log thread = 1 sequence = 149 Record ID = 94 timestamp = 776048489Input archiving log thread = 1 sequence = 150 Record ID =

modification during database recovery. Control files are generally used to store the status of the physical structure of a database. Some status information in the control file is used to guide Oracle during instance recovery and media recovery. Ii. Online logs Each instance of an Oracle database has an associated online log. An online log consists of multiple online log files. The online log file is filled with log items. The data recorded in the log items is used to reconstruct all modificati

directory is configured through a network file system file for each Oracle RAC instance. In other words, the fast recovery area must is shared among all of the instances of an Oracle RAC database. The preferred configuration for Oracle RAC-IS-use Oracle Automatic Storage Management (Oracle ASM) for storing the fast Recovery area, using a different disk group for your recovery set than for your data files.The location and disk quota must is the same on all instances. Oracle recommends, the fast

. Online logs Each instance of an Oracle database has an associated online log. An online log consists of multiple online log files. The online log file is filled with log items. The data recorded in the log items is used to reconstruct all modifications made to the database. The background process LGWR writes online log files cyclically. When the current online log file is full, LGWR is written to the next online log file. It can be used when the checkpoint of the last available online log file

The log archiving mode of Oracle can effectively prevent instance and disk faults and is indispensable for database fault recovery. Because the initial installation mode of oracle is not the archive mode, therefore, you need to set it to archive mode. The following describes the methods and steps. Although simple, this is a necessary task for managing oracle databases. Therefore, the following table is provided. The example is based on Windows XP and

will not affect other uses of the system's monitoring process, such as the recovery of data when the routine shuts down gracefully. That is, even if this parameter is set to 0, it can still use the records in the Redo log file to recover the relevant data when necessary. II. Archiving Process Arch There are two modes of archiving and not archiving in redo log fi

standby still needs to replay, and the standby Cannot recover. You get a error like:ERROR: requested WAL segment 00000001000000010000002D has already been removedto prevent this, you is currently expected to configure continuous archiving and provide a Restore_command to give the replica access to the archive, or being willing to re-create a standby that falls behind.A less reliable alternative are to set wal_keep_segments to a "high enough" value t

Welcome to the Oracle community forum and interact with 2 million technical staff. 3. Switch between automatic archiving and manual archiving when the instance is running. 1. You can use the archiveloglist command to view the archive method. SQLarchiveloglistDatabaselogmodeArchiveModeAutomaticarchivalEnable Welcome to the Oracle community forum and interact with 2 million technical staff> go to 3. Switch be

Analysis of archive and archive of OC objects and Analysis of oc archive files Object archiving means to persistently store objects in the memory. Object archive is to read the Persistent Object to the memory. In oc, object archiving can be roughly divided into the following methods: The quantity can be divided: Objects can be divided into the following forms: Next, write the code one by one for simple impl

LogsTo make your data highly available, it is important to configure the database so you can recover your data after a system failure. redo logs contain a record of changes that were made to datafiles. redo logs are stored in redo log groups, and you must have at least two redo log groups for your database.After the redo log files in a group have filled up, the log writer process (LGWR) switches the writing of redo records to a new redo log group. oracle Database can automatically save the inac

Open-source PACS servers outside China Luo chaohui (http://www.cnblogs.com/kesalin) This article follows the "signature-non-commercial use-consistency" creation public agreement Name:Dcm4cheRating:★★★★★Open-source license: GPL lgpl MPLFunction: supports image processing, image archiving, image management, image transmission, and worklist.Standard: DICOM, HL7, IHE, mpps, wadoLanguage: EnglishClient: desktop, Web-basedPlatform: cross-platformPr

Microsoft Office Communications Server 2007 R2 Deployment four deployment archiving and monitoring server Since the OCS server is required to fill in the storage server address and monitor server address, we have deployed the Archiving server and the monitoring server This chapter is divided into I. Deploying an Archiving Server 1. Install the

archived Through multiplexing in the future. If media recovery is required, you can use these archived redo logs for restoration. Note that using online backup cannot guarantee that you do not lose data. Such steps as putting control files in different locations through multiplexing to make the database immune, using online redo logs and archiving redo logs are all necessary to avoid single point of failure. In Oracle, to switch from the default offl

more effective e-mail management, sensitive messages to intercept, encrypt or block the transmission. More secure data access is needed for mobile phones, tablets and PCs. On the other hand, the systematic archiving of these information has become increasingly urgent as the number of e-mails within the enterprise continues to grow. Archiving saves users ' mailbox space, improving messaging system performa

Tags: open top roc Tin Restart process information Dia Force Redo LogThe 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 fully recover the database when media failures occur on the database. Log operation mode: ARCHIVELOG Noarchivelog

1. Set the archive mode to 1. sqlarchiveloglist; # Check whether the archive mode is 2sqlaltersystemsetlog_archive_starttruescopespfile; # enable active archiving; # Set the archive path to s. 1. set archive mode to 1. SQL archive log list; # Check whether archive mode is supported. 2. SQL alter system set log_archive_start = true scope = spfile; # enable active archiving SQL alter system set log_archive_de

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