| Oracle® Database Reference 10g Release 1 (10.1) Part Number B10755-01 |
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View PDF |
| Oracle® Database Reference 10g Release 1 (10.1) Part Number B10755-01 |
|
|
View PDF |
DBA_HIST_LATCH_MISSES_SUMMARY displays historical summary statistics about missed attempts to acquire a latch. This view contains snapshots of V$LATCH_MISSES.
| Column | Datatype | NULL | Description |
|---|---|---|---|
SNAP_ID |
NUMBER |
NOT NULL |
Unique snapshot ID |
DBID |
NUMBER |
NOT NULL |
Database ID for the snapshot |
INSTANCE_NUMBER |
NUMBER |
NOT NULL |
Instance number for the snapshot |
PARENT_NAME |
VARCHAR2(50) |
NOT NULL |
Latch name of a parent latch |
WHERE_IN_CODE |
VARCHAR2(64) |
NOT NULL |
Location that attempted to acquire the latch |
NWFAIL_COUNT |
NUMBER |
Number of times that no-wait acquisition of the latch failed | |
SLEEP_COUNT |
NUMBER |
Number of times that acquisition attempts caused sleeps | |
WTR_SLP_COUNT |
NUMBER |
Number of times a waiter slept from this loc |
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