SCF Reference Manual for the Storage Subsystem (G06.24+, H06.03+)

Storage Subsystem Commands
SCF Reference Manual for the Storage Subsystem—529937-007
14-83
ALTER PROFILE Command
REVIVEINTERVAL number
is the interval (in 10-millisecond units) between copy operations when the disk is
being revived. number is in the range 1 (10 milliseconds) through 32767 (more
than 5 minutes). The default is 100 units (1 second).
SERIALWRITES { DISABLED | ENABLED }
(mirrored volumes only) specifies whether serial writes are used when updating
files.
SQLMXBUFFER number
(SQL/MX volumes only) is the buffer size (in megabytes) for an SQL/MX session.
number is in the range 0 through 768. The default is 0. Do not use this attribute
for TMF audit-trail volumes.
If you specify too large or small a value, DP2 automatically sets the needed size.
If you specify a value of 0, DP2 automatically sets the size of the buffer to 128.
If SQL/MX is not installed, setting this attribute to 16 allows DPS to increase DP2
cache to its maximum.
STARTSTATE { STARTED | STOPPED }
specifies whether the IOP is available to other processes (STARTED) or
unavailable (STOPPED) when the system is loaded or reloaded. The default is
STARTED.
ALTER PROFILE Examples
See the procedure for Altering a Profile on page 6-10.
•
To modify the standard default profile for all internal disks in the system:
-> ALTER PROFILE $ZZSTO.#INTERNAL-DISK, NAMEMASK DATA
•
To change a profile for all disks inserted into group 03:
-> ALTER PROFILE $ZZSTO.#INTERNAL-DISK-3, MIRRORING OFF
ENABLED Perform serial writes if the mirror disk is available. If the primary
or mirror disk is not available, and if FULLCHECKPOINTS
(page 14-78) is ENABLED or FORCED, full-block checkpoints
protect the validity of the data. ENABLED minimizes potential data
loss caused by certain processor error conditions. (Default)
DISABLED Do not perform serial writes unless this attribute has been
specified for a specific file and the mirror disk is available.
DISABLED maximizes the performance of mirrored disks.