oracle acfs

ASM Cluster File System | Oracle СНГ | Oracle ACFS Replication


An existing operating system user must be designated as the first Oracle ACFS security administrator and an existing operating system group must be designated as the security administrator admin group. The following table contains the options available with the acfsutil meta command. Additional users can be designated as security administrators. To obtain the best copy of the file system with acfsutil meta , unmount the file system before running acfsutil meta. Кроме того, OracleACFS также может использоваться в качестве файловой системы общего доступа для домашних двоичных файлов Orale. In most circumstances, acfsutil meta automatically copies the accelerator device into the record-oriented output file. When the first security administrator is created, the administrator is assigned a password that can be changed by the administrator. Note that if you are using another file system other thanOracle ACFS, as long as that file system can support online resizing, they toocan be dynamically re-sized. An Oracle ADVM volume device exports Oracle ASM volume manager features and ensures that volume mirrors remain consistent in the face of abnormal system shutdowns, Oracle ASM instance failures, or system failures.

These views are accessible from the Oracle ASM instance. Для разделения дисковой группы по нескольким узлам необходимо установить на всех них Clusterware, независимо от установки или неустановки RAC. Oracle ACFS implements tagging with Extended Attributes. На всех узлах новый статус тома ASM должен быть ВКЛЮЧЕН. This workaroundincludes some of the manual steps that are required to launch the Oracle ASMvolume driver when installing Oracle ACFS on a non-clustered system. Display the trace entries for open files associated with the Oracle ACFS file system specified by the mount point. Oracle ACFS provides support for sparse files. Also, symbolic link files lose explicitly set tag names if they have been moved, copied, tarred, or paxed. Я принудительно остановил экземпляр ASM на узле 6, чтобы имитировать сбой. This action prevents further consumption of disk space for replication operations and frees disk space consumed by any replication logs that remain. ASMFD устанавливается с инфраструктурой, если при этом есть и драйвер библиотеки ASMLIB, возможны варианты - при использовании для упралвения устройствами можно продолжать использовать ASMLIB или мигрировать на FD, или же удалить ASMLIB и использовать FD. Oracle ACFS underlying extent-based architecture provides fast file access, high throughput and fast response time. Specifies the directory where the file system is mounted. Или выполните другое действие, или щелкните по кнопке "Exit". Windows security identifiers, which are used in defining access rights to files and directories, use information which identifies the user. Oracle ACFS runs on operating system platforms as a native file system technology supporting native operating system file system application programming interfaces (APIs). The Oracle Database base ( ORACLE_BASE for database) directory should not be the Oracle Grid Infrastructure base ( ORACLE_BASE for grid) directory or should not be located under the Oracle Grid Infrastructure base directory ( ORACLE_BASE for grid).

RMAN позволяет сделать полную миграцию БД, или только табличное пространство, или файл данных. Each access to a realm-secured file is first checked for security realm authorization. Oracle ASM is the preferred storage manager for all database files. This is a key for a file and is used to encrypt the data in the file. Для успешного выполнения этих сценариев требуется доступ к определенным совместно используемым библиотекам в GI ORACLE_HOME. In order to mount the new cluster file system, theOracle ASM ACFS binaries need access to certain shared libraries in theORACLE_HOME for grid infrastructure. This action re-encrypts all files with the most recent VEK. ERROR_INSUFFICIENT_BUFFER - The value buffer is too small to hold the returned value. Затем появится диалоговое окно, подтвердите введенную информацию и нажмите OK. However, more file systems can be mounted if there is adequate memory. Determines whether Oracle ACFS is installed on the system. Моментальный снимок Oracle ACFS - это оперативная репликация файловой системы Oracle ACFS, доступная только для чтения, на определенный момент времени. For information about Oracle ACFS encryption, refer to "Oracle ACFS Encryption". Содержимое файлов ASM сохраняется в дисковой группе как набор или коллекция экстентов, расположенных на отдельных дисках группы, каждый экстент находится на одном диске группы, и содержит один или несколько allocation units. После запуска asmca на экране появляется закладка "ASM Instances". Четвертый способ - использовать команду ASMCMD. The database owner must be specified with the -u option to allow that owner to mount and dismount the file system. N/A may be displayed if it is not available. Run the acfsutil dumpstate command only when Oracle Support requests diagnostic and debugging data for analysis.

How to create ACFS file system in RAC using command line DBACLASS

Do not perform a block scan looking for lost metadata on the entire volume. Consequently, backup applications that access files using the native operating system file system interfaces are able to access and backup Oracle ACFS file systems and other native operating system file systems. Sets the maximum log file size in megabytes. Normally you do not have to change value of this tunable parameter however, you many to consider changing the value to get better performance. Нам нужно использовать пользователя root на всех узлах, чтобы вручную выполнить операцию монтирования. Note that at thetime of this writing, ASMCA only supports the creation of volumes and filesystems. Another node recovers any outstanding metadata transactions, assuming it can write the metadata out to the storage. -Все начинается с группы дисков Oracle ASM. Oracle ACFS sparse files greatly benefit NFS client write operations which are commonly received out of order by the NFS server and the associated Oracle ACFS file system. Самое важное - помнить, что ORACLE ACFS предпочтительнее для управления файлами, не относящимися к базе данных. При использовании CRETE SPFILE ='+.' обновляется также Grid Prifile, данные оттуда можно получить командой ASMCMD spget. The Oracle ASM Dynamic Volume Manager (Oracle ADVM) provides volume management services and a standard disk device driver interface to clients. When acfsutil info ftrace initially runs, the command attempts to purge any cached files that are no longer referenced. Dismounting an active file system, even one that is offline,requires stopping all applications using the file system, including any shellreferences. -После выбора вкладки ASMCLUSTER FILE SYSTEM нажмите кнопку CREAT E. Теперь новая кластерная файловая система ASM готова к использованию. The second command displays the current settings of the Oracle ADVM parameters. ABORT - останавливается сразу без очередности размонтирования дисковых групп, подключенные БД также падают, требует восстановления при следующем старте.

Because Oracle ACFS tag names currently use a fixed value string of 5 (the number zero character with a byte length of one) the value is the same for all Oracle ACFS tag name entries. Before an Oracle ACFS file extentis modified or deleted, its current value is copied to the snapshot to maintainthe point-in-time view of the file system. Требования к этим файлам в БД и ASM одинаковы, для кластеров spfile нужно ложи ть на кластерную ФС. Вот очень важный момент: после того, как мы создадим моментальный снимок, на самом деле в каталоге моментального снимка не будет данных, поэтому нет необходимости использовать дополнительное пространство для хранения.

Specifies a pointer to a file or directory path name. File systems can be created using operating system command-line tools or Oracle Enterprise Manager. You must be a privileged user to set a parameter. Каждая система ACFS может наконец установить 68 снимка. The following is an example of the use of acfsdriverstate. -Oracle ACFS может создавать, монтировать и управлять ACFS так же, как пользователи выполняют команды Linux. Retrieves memory diagnostic log files and manages debug settings. You can use acfsload to manually load or unload the Oracle ACFS, Oracle ADVM, and OKS drivers. This chapter describes Oracle Automatic Storage Management Cluster File System (Oracle ACFS) concepts and provides an overview of Oracle ACFS features. The snapshotdirectory will only containmodifiedfile blocks when a file isupdated or deleted. При команде startup вместо монтирования и открытия БД проводится попытка смонтировать дисковые группы. On Solaris, Oracle ACFS tagging APIs can set tag names on symbolic link files, but backup and restore utilities do not save the tag names that are explicitly set on the symbolic link files. Specifies a pointer to a NULL-terminated Oracle ACFS tag name in the format of a valid tag name for regular files and directories. Instead, Oracle ACFS isolates errors to a specific file system, putting it in an offline error state. The srvctl start filesystem command is used to manually mount the Oracle ACFS file system. Specifies the value of the specified parameter. Specifies a pointer to a memory buffer containing the list of Oracle ACFS tag names. After the installation of Grid Infrastructure Software and before the installation of the Oracle Database software with Oracle Universal Installer (OUI), you can create an Oracle ACFS file system to be configured for use as an Oracle Database Home.

Новые возможности Oracle 11g - описание ACFS - Русские Блоги

Если ДГ не смонтировнаа - нужно использовать аутентификацию операционной системой, например для старта стэка с ASM. This process creates a new file. Соответствующие операции будут продемонстрированы ниже. Oracle ACFS does not support any file type that can be directly stored in Oracle ASM, except where explicitly noted in the documentation. For example, if there are cluster sites A and B , a primary file system hosted at site A can be replicated to a standby file system at site B. cksum [ -C | -CE ] header_offset [. The stop action for an Oracle ACFS file system resource attempts to dismount the file system. After a file is placed under realm security, file-level encryption operations are not allowed on that file. - Обратите внимание, что этот метод позволяет нам использовать Oracle ACFS на платформе CentOS, но это не означает, что он поддерживается Oracle. - После монтирования ACFS на всех узлах установите точку монтирования, чтобы разрешить связанным пользователям доступ к ней. Единственно, что не может быть сохранено в ACFS, - это исходная грид-инфраструктура (Grid Infrastructure home), а любые Oracle-файлы могут непосредственно храниться в Oracle ASM. For information about Oracle ACFS security, refer to "Oracle ACFS Security". Для конфигурации Oracle Restart (standalone) разделяемый SPFILE и файл паролей лежат в дисковой группе. For information about dismounting Oracle ACFS file systems, refer to Deregistering, Dismounting, and Disabling Volumes and Oracle ACFS File Systems. Other supported files are video, audio, text, images, engineering drawings, and other general-purpose application file data.

Активный путь - это одиночный канал доступа или множественный канал доступа. Как пользователь "oracle" войдите в среду ASM на первом узле RAC, а затем, используя SQL*Plus, соединитесь с экземпляром ASM. This article describes three ways to create an ASM Cluster File System in an Oracle 66G Release 7 RAC database. В кластере диск модет подключаться отличающимися именами операционной системы, но имеет одинаковое ASM имя на всех узлах. The sites hosting the primary and standby file systems must be running the same operating system and must have the same machine architecture. If an action is required while the system is running or the system is running on other operating system (OS) versions, you can load or unload the drivers manually with the acfsload command. Oracle ACFS command rules are associations of the file system operation to a rule set. Create ASMVolume:Then create a new ASM volume by supplying a VolumeName , Disk Group Name , and Size. Процесс обнаружения определяет принятые в операционной системе имена дисков для ASM, и находит все диски, включаемые в дисковые группы или те, что должны быть включены. To add a volume to an Oracle ASM disk group, disk group attributes COMPATIBLE.ASM and COMPATIBLE.ADVM must be set to '66.7'.

If you werelooking for functionality in Oracle ACFS to perform arollbackof thecurrent file system to a snapshot, then I have bad news one doesn't exist.Hopefully this will be a feature introduced in future versions! Помимо того, что Oracle не поддерживает файл базы данных, Oracle ACFS не поддерживает домашнее хранилище сетевой инфраструктуры. Enter a Volume Label and the previously created mount point directory, then click the "OK" button. For example, there should be a separate Oracle base for a grid user and a database user. Можно увидеть командой $ORACLE_HOME/bin/asmcmd afd_state или запросом SELECT SYS_CONTEXT('SYS_ASMFD_PROPERTIES', 'AFD_STATE') FROM DUAL О корректном конфигурировании и регистрации драйвера экземпляром ASM говорит значение CONFIGURED. It is critical that there is enough disk space available on both sites hosting the primary and the standby file systems to contain the replication logs. Updates blog debug levels from dbg file. - В этом случае, если мы случайно удалим файл в текущей файловой системе, мы можем использовать команду cp, чтобы восстановить его прямо из снимка.

-Когда ACFS в активном состоянии связана с дисковой группой ASM, если экземпляр Oracle ASM или дисковая группа вынуждены выключиться или выйти из строя, файловая система перейдет в автономный режим. - Заполните параметры VolumeName, Disk Group Name и Size, чтобы создать новый том ASM. Аутентификация через группы ОС OSDBA, OSOPER, OSASM работает во всех юниксах, а подключение с грантом SYSASM отдают доступ ко всем группам и функциям управления. -Если переменная среды ORACLE_HOME не установлена, команда mount завершится ошибкой. However, the Oracle ACFS specific fsck command on some OS platforms might not access the output file correctly or might not work with a specified flag. This driver provides block device services for Oracle ASM volume files that are used by file systems for creating file systems. - Если вы хотите запросить все снимки, вы можете просмотреть каталог ACFS_MOUNT_POINT /.ACFS/snaps , снимки ACFS будут иметь отдельный каталог в этом каталоге. After validatingthe Oracle grid infrastructure installation and logging in as the Oracle grid infrastructureowner (grid), the next step is to decide which Oracle ASM disk group should beused to create the Oracle ASM dynamic volume(s). To access an external table stored on an Oracle ACFS file system on Windows, the external table must be created with the DISABLE_DIRECTORY_LINK_CHECK access parameter. Specifies the location of any associated accelerator device, to be used if the file system is unmountable. This operation occurs automatically. Wait for the volume to be created, then click the "OK" button on the subsequent message dialog.

DevOps Series: Setup Oracle ACFS(ASM Cluster File...) | Medium

Подождите, пока этот том не будект создан, и кликните "OK" для продолжения диалога. By default, the statistics are sorted by Total Wait. On the resulting ASM screen, click on the "ASM Cluster File System" tab. The size must be large enough so the original blocks can be preserved when the file system modifications are made. The newly created volume will now be entered in the Volume Device field. Even if the realm security allows the file owner or the root user to open the file, file-level encryption operations are blocked. Zeroes out (clears) the current collected lock statistics. In the previous examples, ORACLE_BASE has been set to /u56/app/acfsmounts and that value could have been used in place of the ORACLE_BASE variable. The following describes the output of the acfsutil info ftrace command. -Как только моментальный снимок OracleACFS создан, все файлы моментальных снимков можно использовать немедленно. For an example of the specific actions required to create a file system, see "Basic Steps to Manage Oracle ACFS Systems". Before an Oracle ACFS file extent is modified or deleted, its current value is copied to the snapshot to maintain the point-in-time view of the file system. For example, this situation could occur if the file system is corrupt. Specifies the path to the Copy-On-Write (COW) file for the Oracle ACFS online checker. Тем самым показано, что кластерная файловая система ASM работает как ожидалось. See "ASMCMD Volume Management Commands". With this feature, a hole remains in the file instead of the inserted zeroes.

В процессе создания моментального снимка используется метод копирования при записи для эффективного использования дискового пространства. Expanding the record-oriented output file should be performed on the system where diagnosis and analyzes is to be performed. Parameters should be set with caution and usually only by Oracle Support Services. acfsutil snap create: Snapshot operation iscomplete. The next component is an OracleASM volume which is created within an Oracle ASM disk group. Вы можете монтировать и демонтировать любую ACFS, выполнив следующие команды от имени пользователя "root" на каждом узле RAC. It might not be possible for an administrator to dismount a file system while it is in the offline error state if there are processes referencing the file system, such as a directory of the file system being the current working directory for a process. Otherwise, an Oracle ACFS file system may be mounted into the native operating system file system namespace using either the mount command line tool or an Oracle Enterprise Management tool. Display the trace entries for open files.

For additional information, refer to " acfsutil tag info ". Oracle Restart повышает доступность БД и работает из отдельного от HOME СУБД каталога. When installing Oracle Software, there must be a separate Oracle base ( ORACLE_BASE ) associated with each operating system user. Во время монтирования системы ACFS снимок остается доступным. The security realm passwords for administrators are stored in a location created during the security initialization process. и поддерживаются только опции не выше версии СУБД. To use Oracle ACFS security functionality on Linux, the disk group compatibility attributes for ASM and ADVM must be set to 66.7.5.7 or higher. ACFS - это обычная стандартная система кластерных файлов POSIX и приложение Oracle ASM. The following table contains the options available with the acfsutil dumpstate command. If omitted, the default unit is bytes. For additional information, refer to " acfsutil tag set ". - Если вы не установите переменную среды ORACLE_HOME, как указано в этом документе, вы столкнетесь с указанной выше ошибкой. In the event of a member failure, another cluster member quickly recovers any outstanding metadata transactions on behalf of the failed member. Since no Oracle ACFS snapshots exist, thesnaps directory is empty. Начальный размер экстента равен размеру заданного для дисковой группы allocation unit и увеличивается с множителем 9 или 66 до заданного порога.

Failure to do so will result in I/O failures and veryangry users! Всего файлов 67, включая любой файл с расширением *.ko. The newly created volume will now be selected in the Volume list. Displays lock contention statistics. The primary use for the -q flag is for situations where there is not sufficient time to run the full version of the metadata collector. Backup applications that use interfaces other than the standard operating system interfaces (read or write) are not supported with Oracle ACFS. If the Oraclegrid infrastructure ' ora.registry.acfs ' resource does notexist, create it. With the addition of the Oracle ADVM, Oracle ASM becomes a complete storage solution of user data for both database and non-database file needs. Сначала мы должны создать точки монтирования в файловой системе каждого узла для нового тома. The acfsutil log command enables you to manage memory diagnostic log files.

ORACLE-BASE - Oracle ASM Cluster File Systems (ACFS) in Oracle...

For information about managing Oracle ACFS file systems with Oracle Enterprise Manager, see "Managing Oracle ACFS with Oracle Enterprise Manager". Oracle Enterprise Manager обеспечивает одинаковый интерфейс взаимодействия с кластерными файловыми системами ASM. In an Oracle Grid Infrastructure clusterware configuration, run srvctl add filesystem to enable a file system to be automounted when an Oracle Database home is installed on the Oracle ACFS file system. При старте в RESTRICTED режиме группы из ASM_DISKGROUPS монтируются в ограниченном режиме, что предотвращает их использование базами данных, а также отключает класс RESTRICTED команды ALTER SYSTEM для экземплояра ASM, а команда ALTER DISKGROUP diskgroup MOUNT расширяется для монтирования дисковых групп экземпляром ASM в ограниченном режиме. On Linux, drivers are automatically loaded and unloaded at system boot time and system shutdown time. Use of the srvctl start and stop actions to manage the Oracle ACFS file system resources maintains their correct resource state. You can also manage Oracle ACFS snapshots with Oracle Enterprise Manager. The acfsgettag library call retrieves the value string of the Oracle ACFS tag name. В кластерной конфигурации пользователь ASM, например grid, не должен входить в группы dba базы данных, ибо кластерный агент запускается как владелец БД и может использовать SYSDBA для подключения к БД. The mount path must be provided to the API to identify the plug-in enabled Oracle ACFS file system that is being referenced. The log files include information such as acfsutil commands that have been run, the use of security or system administrator privileges, and runtime failures such as realm check authorization failures.

Introduction to Oracle ACFS

Other persistent log configuration settings are managed by the acfsutil plogconfig command. The snapshot process uses Copy-On-Write functionality which makes efficient use of disk space. The path must be on a different Oracle ACFS file system. Click the "OK" button on the resulting message. For information about V$ASM views, refer to "Views Containing Oracle ACFS Information".

Выберем "Create Volume" из списка томов. The Oracle ACFS driver must first be enabled for plug-in communication using the acfsutil plugin enable command. - После создания тома выберите вкладку Volumes в главном интерфейсе инструмента ASMCA. If a tunable parameter is specified without a value, the acfsutil tune command displays the value that is currently assigned to the specified tunable parameter. The log files include information such as acfsutil commands that have been run, the use of security or system administrator privileges, and runtime failures. - В дисковой группе DOCSDG6 ASM 67 ГБ свободного места, мы расширяем его на 5 ГБ. The following example illustrates the use of the acfsutil plogconfig command to display the current configuration settings. Oracle ACFS file systems listed in the Oracle ACFS mount registry are automatically mounted during Grid Infrastructure initialization and as new mount registry entries are created. In addition, num must be unique among members of the cluster and must be the same num on each member of the cluster for a given file system. Other privileged Oracle ACFS file system operations that do not require root privileges can be performed by the Oracle ASM administrator. - Каждый раз, когда мы создаем файловую систему ACFS, автоматически создается скрытый подкаталог (.ACFS), соответствующий файловой системе ORACLEACFS. The featuresincluded with Oracle ACFS allow users to create, mount, and manage ACFS usingfamiliar Linux commands.

If the primary file system runs out of space and you decide to free up space by removing files, you should only remove files that are not being replicated because the removal of a file that is replicated is captured in a replication log. The ADVM services include functionality to create, resize, delete,enable, and disable dynamic volumes. If the provided buffer is NULL and metric_buf_len = 5 , the return value is the size required to hold all the currently collected metrics. Begins (enables) collecting lock statistics.

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Users and applications can access and manage Oracle ACFS using native operating system file system application programming interfaces (APIs) and command-line interface (CLI) tools. You must be a root user or the Windows Administrator to change the value of a tunable parameter. advmutil tune displays or sets the value of an Oracle ADVM parameter. Обратите внимание, что вновь созданная ACFS здесь не монтируется. This functionality can be used with Oracle Virtual Machines (OVM) in support of OVM images, templates, and virtual disks (vdisks) created in Oracle ACFS file systems and presented through Oracle ACFS loopback devices. Oracle ACFS расширяет архитектуру Oracle ASM. Oracle ACFS rule sets are collection of rules. Specifies silent mode when running the command. Oracle ACFS file systems are configured with Oracle ADVM based operating system storage devices that are created automatically following the creation of an Oracle ADVM dynamic volume file. The volumes must be closed and re-opened to access the volume again. На появившемся ASM-экране кликните по закладке "ASM Cluster File System". General Oracle ACFS information for file systems can be accessed by any system user. Any subsequent attempt to access an offline file system returns an error. ENODATA x7568 The tag name does not exist for this file or directory. Exit the SQL*Plus session, then create a file system on the volume. Also, unprivileged users can initiate encryption for files they own. Dump statistics to acfs.dumpstats in the current directory. Создайте сценарий инициализации: /etc/init.d/acfsload, включая команды уровня запуска и acfsload. - ORACLE ACFS (кластерная файловая система ASM) была представлена ​​в Oracle 66gR7. When building the application executable, the application must be linked with the acfs67 library. There is sufficient network bandwidth to support replication between the primary and standby file systems.

Введите следующую команду, чтобы создать новый том. ASMCMD command-line tools for managing Oracle ASM volumes. One or more Oracle ADVM volume devices may be configured within each Oracle ASM disk group. %ID% : The numeric file identifier. Должен появиться следующий экран. As shown inthe next section, Oracle ACFS file systems can be dynamically re-sized toaccommodate addition file and snapshot storage requirements. The encryption feature protects data in an Oracle ACFS file system in encrypted format to prevent unauthorized use of data in the case of data loss or theft. On supportedoperating systems, the Oracle ACFS modules will be configured and the OracleASM volume driver started by default after installing Oracle gridinfrastructure. The messages that are logged to this file are for commands that are not associated with a specific file system, such as acfsutil sec init. Oracle ACFS can be accessed and managed using native operating system file system tools and standard application programming interfaces (APIs). Экземпляр ASM построен на тех же технологиях, что и экземпляр БД, он имеет SGA и фоновые процессы, похожие на БД, однако в силу иных задач размер SGA. Oracle ACFS tagging assigns a common naming attribute to a group of files. ASM Cluster FileSystems:The newly created Oracle ASM cluster file system is now listedunder the 'ASM Cluster File Systems' tab. The following command execution dumps file system statistics, creates a binary incident file, and clears all file system statistics for the specified file system. The Linuxdistribution used in this guide is CentOS 5.5. For information about Oracle ACFS security infrastructure, refer to "Oracle ACFS Security". Если размер AU для дисковой группы > = 9 Мб, или параметр RDBMS compatiblity больше или равен 66.7.5.9, по количество экстентов каждого вида (AU, 9*AU, 66*AU) вычисляется для обеспечения максимального размера файла. -Когда файловая система ACFS находится в режиме онлайн, команда fsck не может быть выполнена.

Overview of Oracle ACFS

This driver provides portable driver services for memory allocation, synchronization primitives, and distributed locking services to Oracle ACFS and Oracle ADVM. For information about registering an Oracle ACFS file system using the acfsutil command, see "acfsutil registry". For information about Oracle ASM privileges, see "About Privileges for Oracle ASM". Oracle ACFS tagging operations are supported through a common operating system (OS) independent file tag (C library) application programming interface (API). The return value is the nonzero byte length of the output value string on success or ACFS_TAG_FAIL on failure. Для FD строка определения задаётся в AFD_DISKSTRING, командами $ $ORACLE_HOME/bin/asmcmd afd_dsset '/dev/rdsk/mydisks/*' и $ $ORACLE_HOME/bin/asmcmd afd_dsget или запросами ALTER SYSTEM AFD_DISKSTRING SET '/dev/disk5','/dev/disk6','/devices/dsk/*' SELECT SYS_CONTEXT('SYS_ASMFD_PROPERTIES', 'AFD_DISKSTRING') FROM DUAL Можно также менять парамет ASM ASM_DISKSTRING, например: ASM_DISKSTRING = 'AFD:DISK5', 'AFD:DISK6', '/dev/rdsk/mydisks/*' или ASM_DISKSTRING = 'AFD:*', '/dev/rdsk/mydisks/*', в т.ч.

Understanding Oracle ACFS Advanced Topics

The Oracle ACFS file system resource is supported only for Oracle Grid Infrastructure cluster configurations it is not supported for Oracle Restart configurations. For these examples I used the VMware RAC installation described here. -Чтобы создать том OracleASM, уровень совместимости экземпляра Oracle ASM должен быть установлен как минимум на 66.7. Each time the file system is mounted a notification is generated with a system event logger message until fsck or acfschkdsk is run. The directories and files reside on a file system secured by Oracle ACFS security. See Chapter 65, "Administering Oracle ACFS with Oracle Enterprise Manager".

The amount of operations displayed is limited to conserve memory. Specifies the size (bytes) of the memory buffer that holds the returned Oracle ACFS tag name list. For all applications, Oracle ACFS performance is best with larger write() sizes, such as 8 K or larger. Используя Oracle ASM Dynamic Volume Manager, вы также можете динамически изменять размер существующих файловых систем в интерактивном режиме. Writes text to the blog file at the specified mount point. This is the same number that is used with acfsutil info id. Removes the tag name on an Oracle ACFS file. The start action for an Oracle ACFS file system resource is to mount the file system. Щелкните здесь EXIT, чтобы выйти из ASMCA. Changing a tunable parameter has an immediate effect and persists across restarts. Oracle ASM Dynamic Volume Manager (Oracle ADVM) provides volume management services and a standard disk device driver interface to clients. - Последний шаг - изменить любой сценарий оболочки ORACLEACFS, добавить параметр ORACLE_HOME и скопировать его в каталог / sbin. Modifies or displays Oracle ACFS tunable parameters. After a Grid Infrastructure installation and Oracle Clusterware is operational, you can use Oracle ASM Configuration Assistant (ASMCA) to start the Oracle ASM instance and create Oracle ASM disk groups, Oracle ADVM volumes, and Oracle ACFS file systems. Variable extent-based storage allocation and high-performance directories contribute to fast performance and shared disk configurations that provide direct storage paths to Oracle ACFS file data from each cluster member. Note that the newclustered file system is not mounted. To configure encryption and manage encryptedOracle ACFS file systems, you can use the acfsutil encr command-line functions described in "Encrypting Oracle ACFS File Systems" and "Oracle ACFS Command-Line Tools for Encryption". The standby file system must have a minimum size of 9 GB and should be sized appropriately for the amount of data being replicated and the space necessary for the replication logs sent from the primary file system. Oracle Grid Infrastructure includes Oracle Clusterware, Oracle ASM, Oracle ACFS, Oracle ADVM, and driver resources software components, which are installed into the Grid Infrastructure Home using the Oracle Universal Installation (OUI) tool. ADVM ACFS сейчас не поддерживают NFS/CIFS, но файловая система ACFS может быть расшарена как NFS/CIFS, только без ACL на UNIX клиентах.

The demo provides instructions to build the utility with a makefile on each supported platform. Разница между динамическим томом ASM и другими типами файлов ASM (DATAFILE, TEMPFILE, ONLINELOG и т. Individual file systems are either manually mounted or dismounted using an Oracle ACFS or Oracle Clusterware command-line tool, or automatically mounted or dismounted based on a resource dependency action. Это упрощает понятия использования базой любой файловой системы. An Oracle ASM disk group is made up ofone or more disks shown in figure 6 as DOCSDG6. Oracle ACFS security provides realm-based security for Oracle ACFS file systems, enabling you to create realms to specify security policies for users and groups to determine access on file system objects. Самый легкий способ изучения использования утилиты командной строки - это запустить Enterprise Manager и щелкать кнопкой "Show Command" на каждом шаге пути. This functionality incudes the commands for initiating, setting, and reconfiguring encryption. NFS : A NFS process has accessed the file on behalf of client. However, if an encryption, decryption, or rekey operation is specified at the file system level, then the operation does not process files and directories of snapshots in the .ACFS/snaps/ directory. After verifying all values in thisdialog are correct, click the[OK]button. Группа дисков ASM может создавать любое количество томов. Oracle ACFS plug-in operations are supported through a common, operating system (OS) independent file plug-in (C library) application programming interface (API). Oracle ACFS does not support any files associated with the management of Oracle ASM, such as files in the Oracle Grid Infrastructure home and in the Oracle ASM diagnostic directory. Кликните по кнопке "Create ASM Volume" (создать том ASM). You must first create the encryption key store, then specify file system-level encryption parameters and identify the directories.

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