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Oracle 视图 V$ASM_FILESYSTEM 官方解释,作用,如何使用详细说明

本站中文解释

Oracle视图 V$ASM_FILESYSTEM 旨在列出当前己挂载在ASM实例上的所有ASM文件系统。

它报告有关每个挂载点文件系统的状态、属性和注释信息,如文件系统状态、名称、类型、文件系统中空间的使用情况等。

用户可以使用此视图来查询当前挂载在ASM实例上的ASM文件系统的详细信息,如状态、大小等信息。

例如,可以使用以下查询语句查看挂载的ASM文件系统的状态和大小:

“`sql
SELECT mount_status,
space_used,
space_total
FROM v$asm_filesystem;
“`

官方英文解释

V$ASM_FILESYSTEM displays information for every mounted Oracle ACFS.

Column Datatype Description

FS_NAME

VARCHAR2(1024)

Mount point (primary key)

AVAILABLE_TIME

DATE

Mount time or the time that the file system became available again; NULL if the file system is not available

BLOCK_SIZE

NUMBER

File system block size (in kilobytes)

STATE

VARCHAR2(13)

File system status::

  • NOT AVAILABLE

  • AVAILABLE

  • OFFLINE – Either the Oracle ASM instance is down, the disk group has been forced dismounted, or less commonly, a metadata I/O failure occurred or serious metadata corruption was detected. In the case of a metadata I/O failure, the file system is also marked as corrupt. An offline file system can only be unmounted; other attempts at access result in errors.

CORRUPT

VARCHAR2(5)

Indicates whether the file system needs the fixer (fsck, acfschkdsk) to be run (TRUE) or not (FALSE)

NUM_VOL

NUMBER

Number of volumes in the file system

TOTAL_SIZE

NUMBER

Total capacity of the file system (in megabytes)

TOTAL_FREE

NUMBER

Total free space in the file system (in megabytes)

TOTAL_SNAP_SPACE_USAGE

NUMBER

Total space used by snapshots (in megabytes)

REPLSTATE

VARCHAR2(7)

Replication status:

  • NO REPL – Replication is not initialized

  • PRIMARY – File system is initialized for replication as a primary

  • STANDBY – File system is initialized for replication as a standby

RESIZE_STATE

VARCHAR2(5)

Possible resize states:

  • NONE – AutoResize not configured

  • AUTO – Equivalent to AutoResizeEnabled flag

  • ERROR – Equivalent to AutoResizeError flag

COMPRESS_STATE

VARCHAR2(7)

Compression status of the file system. Possible values:

  • DISABLED – Compression is not active

  • ENABLED – Compression is active

  • PARTIAL – Compression is disabled, but the file system may contain compressed files

FROZEN_STATE

VARCHAR2(5)

Indicates whether the filesystem is frozen (TRUE) or not (FALSE)

ACFS_COMPATIBILITY

VARCHAR2(60)

Oracle Release streams where Oracle ACFS has shipped

METADATA_BLOCK_SIZE

NUMBER

Metadata block size of the file system. Possible values:

  • 512

  • 4096

CON_ID

NUMBER

The ID of the container to which the data pertains. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data

For this view, the value is always 0.

See Also:

Oracle Automatic Storage
Management Administrator’s Guide
for additional information about using views to display Oracle ASM information

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