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Oracle® ZFS Storage Appliance Analytics Guide, Release OS8.7.x

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Updated: August 2017

Protocol: OISP Bytes

This statistic shows OISP bytes/sec transferred between OISP clients and the appliance. Bytes statistics can be broken down by client, filename, database name, database filetype, database function, share, and project.

When to Check OISP Bytes

OISP bytes/sec can be used as an indication of OISP load, and can be viewed on the dashboard.

Breakdowns by database filetype and function allow database and storage administrators to correlate database statistics with storage statistics. This provides much better diagnosability to narrow down an abrupt rise not only to a particular database, but also to the database function creating the increase and the filetype associated with it.

The best way to improve performance is to eliminate unnecessary work, which may be identified through the client and filename breakdowns, and the filename hierarchy view. Client and especially filename breakdowns can very expensive in terms of storage and execution overhead. Therefore, it is not recommended to permanently enable these breakdowns on a busy production appliance.

OISP Bytes Breakdowns

Table 45  Breakdowns of OISP Bytes
Remote hostname or IP address of the OISP client.
Filename for the OISP I/O, if known and cached by the appliance.
database name
Name of the database issuing the I/O.
database filetype
Type of file to which the database is writing.
database function
Reason for the database I/O. Acronyms used in this breakdown include RMAN (Oracle Recovery Manager), DBWR (Database Writer for Oracle Database), ARCH (Archiver for Oracle Database), and LGWR (Log Writer for Oracle Database).
The share for this OISP I/O.
The project for this OISP I/O.

These breakdowns can be combined to produce powerful statistics. For example, use “Protocol: OISP bytes per second for client hostname.example.com broken down by filename” to view which files a particular client is accessing.

Further Analysis

Also see: Protocol: OISP Operations.