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The ASM Diskgroups collection collects storage and activity data regarding ASM Diskgroups.
Allocation Size Unit
The size of allocation units in the disk group.
ASM Metadata Block Size
The block size for ASM metadata in the disk group.
Average Service Time
The average service time for all disks in the group.
The name of the disk group.
The number assigned to an ASM disk group.
The state of the specified ASM disk group relative to the Oracle instance (CONNECTED, BROKEN, UNKNOWN, DISMOUNTED, or MOUNTED).
Number of Disks
The number of disks in the disk group.
The number of disks in the disk group that are offline.
The total number of failed I/O read requests for the disk group.
Read IO Requests
The total number of I/O read requests for the disk group.
Total Group Size
The total capacity of the specified ASM disk group (in megabytes).
Usable Group Space
The unused space on the disk group (in megabytes).
Used Group Space
The percentage of used disk space on the entire disk group. This value is calculated as follows:
100*(Total Group Size - Usable Group Space)
The total number of failed I/O write requests for the disk group.
Write IO Requests
The total number of I/O write requests for the disk group.
The ASM Diskgroups Balance collection estimates the rate of balance of IO Activity and Response time of ASM disks on ASM diskgroups.
The extent, in percents, to which the I/O activity is balanced across the ASM diskgroups.
The extent, in percents, to which the I/O time is balanced across the ASM diskgroups.
The number assigned to an ASM disk group.
The ASM Disks collection collects storage and activity data regarding ASM disks.
The service time for each disk. Service time is the response time of a disk, plus any wait time experienced during disk operations.
The date and time when the disk was added to the disk group.
Disk Free Space
The unused capacity of the ASM disk.
The name of the disk.
The number assigned to an ASM disk within its disk group.
The disk’s path, as indicated on the operating-system.
The total capacity of the ASM disk.
The state of the disk, regarding its ASM disk group (UNKNOWN, NORMAL, ADDING, DROPPING, HUNG, FORCING, or DROPPED).
The name of the failure group that contains the disk.
The status of the disk at the discovery stage (UNKNOWN, CANDIDATE, INCOMPATIBLE, PROVISIONED, MEMBER, FORMER, CONFLICT, or FOREIGN).
The label portion of the disk name at the discovery stage.
The access type granted to the disk (UNKNOWN, ONLINE, or OFFLINE). Read/write access is only granted to ONLINE disks; OFFLINE disks still remain part of their disk group.
The date and time when the disk was first mounted.
The mount status of the disk (MISSING, CLOSED, OPENED, CACHED, IGNORED, or CLOSING).
The total number of failed I/O read requests for the disk. Such failures can result from a loss of access to the entire disk, or media corruptions on a generally healthy disk.
The total time spent on I/O read requests.
The external redundancy of the disk, if the ASM mechanism does not provide redundancy. The possible states are: UNKNOWN, UNPROT, MIRROR, or PARITY.
Total IO Percent
The number of I/O operations performed by the selected disk as a percentage of all I/O performed by all disks in all ASM disk groups assigned to the Oracle instance.
The total number of I/O read requests for the disk.
Total Size Percent
The size of the disk as a percentage of the size of all disks in all ASM disk groups assigned to the Oracle instance.
The total number of I/O write requests for the disk.
Used Space Pct
The percent of used space out of the entire space allocation on the ASM disk.
The total number of failed I/O write requests for the disk.
The total time spent on I/O write requests.
The ASM Instance Total collection provides ASM-related data, summarized for the database instance.
Total Disk Space Allocated
The total capacity allocated to all ASM disks residing on ASM groups that are used by this database instance.
Total Disks Free Percent
The total free space percentage on all ASM disks residing on ASM groups that are used by this database instance.
The total number of I/O operations (reads and writes) on ASM managed disks.
The total number of I/O read requests for ASM managed disks.
The total number of I/O writes to ASM managed disks.
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