Sybase 12.5.1, Руководство пользователя

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Additional information about some data items
170
Historical Server
Additional information about some data items
This section provides additional information about using some data items in
views.
Using “Timestamp”, “Timestamp Datim”, and “Elapsed Time”
The following data items can always be included in a playback view, even if
they were not in the input view:
“Timestamp” “Value for Sample”
“Timestamp Datim” “Value for Sample”
“Elapsed Time” “Value for Sample”
“Elapsed Time” “Value for Session”
You can create a playback view consisting of only one or more of these time-
related data items. To do this, you need a valid view name from the input
session, which means that there must be some view in the input sessions that
you do not intend to play back.
When summarization_level is
raw
, “Timestamp” and “Timestamp Datim”
values are the same as those in the original data file, which is the time as
reported by Adaptive Server when the recording was originally made. When
summarization_level is
actual
,
entire
, or a user-defined interval, “Timestamp”
and “Timestamp Datim” values reflect the time zone on the Historical Server
system where the summarization was made.
Time Waited on Lock No
Timestamp
2
Valid Value for Sample
Timestamp Datim
2
Valid Value for Sample
Transactions Valid Full
1. In versions earlier than 11.5, Cache Name was a key. Currently, Cache Name is a
result. A new key, Cache ID, replaces the key Cache Name. For compatibility, Cache
Name remains valid as a key. However, for efficiency and for forward compatibiltiy,
use Cache ID as the key in new views.
2. These data items can be included in any playback view even if not present in the
input view.
Data item (keys in an input view are
required in a playback view) Valid for
non-raw? Conditions for
inclusion