SYS_CACHES
The SYS_CACHES system table provides a list of all cached resources and their current status.
Users see no rows unless they have the ACCESS_TOOLS right. If they have this right, they see rows for all resources for which they have the READ privilege. Users with both ACCESS_TOOLS and READ_ALL_STATUS rights can see all rows.
|
Column |
TDV |
Nullable |
Description |
|
RESOURCE_ID |
INTEGER |
|
The cached resource ID. |
|
RESOURCE_NAME |
VARCHAR(255) |
|
The cached resource name. |
|
RESOURCE_TYPE |
VARCHAR(255) |
|
The cached resource type. Can be TABLE or PROCEDURE. |
|
OWNER_ID |
INTEGER |
|
The cached resource owner’s user ID. |
|
OWNER |
VARCHAR(255) |
|
The cached resource owner’s name. |
|
PARENT_PATH |
VARCHAR(65535) |
|
The path to the cached resource. |
|
STATUS |
VARCHAR(20) |
|
The status of the cache. Value can be: DISABLED—The cache is disabled. NOT LOADED—The cache is enabled, but not loaded. UP—The cache is enabled and loaded. STALE—The cache is enabled and loaded, but the data has expired DOWN—The cache failed its most recent attempt to load CONFIG ERROR—The cache is not configured properly |
|
VARIANT |
VARCHAR(255) |
Yes |
NULL for TABLE views. NULL if no PROCEDURE variants are being tracked. For a PROCEDURE, a comma-separated list of parameter values submitted for generation of the cache. |
|
LAST_REFRESH_END |
TIMESTAMP |
Yes |
The time the most recent refresh finished. |
|
LAST_SUCCESS_END |
TIMESTAMP |
Yes |
The time the most recent successful refresh finished. |
|
LAST_FAIL_END |
TIMESTAMP |
Yes |
The time the most recent failed refresh finished. |
|
LAST_ACCESS |
TIMESTAMP |
Yes |
The time the cache was most recently read from. |
|
LAST_SUCCESS_DURATION |
BIGINT |
|
The number of milliseconds the most recent successful refresh took to complete. |
|
LAST_FAIL_DURATION |
BIGINT |
|
The number of milliseconds the most recent failed refresh took to complete. |
|
NUM_SUCCESS |
INTEGER |
|
The number of times the cache was successfully refreshed since the server was started. |
|
NUM_FAIL |
INTEGER |
|
The number of times the cache failed to refresh since the server was started. |
|
NUM_ACCESS |
INTEGER |
|
The number of times the cache was accessed for read since the server was started. |
|
STORAGE_USED |
BIGINT |
|
The approximate byte size of the cache data. |
|
MESSAGE |
VARCHAR(65535) |
Yes |
A failure message if the cache is in an error state. NULL if there is no message. |
|
INITAL_TIME |
TIMESTAMP |
Yes |
The time the trigger is configured to first start. NULL if not condition type TIMER. |
|
NEXT_TIME |
TIMESTAMP |
Yes |
The time the trigger will next fire. NULL if not condition type TIMER. |
|
FREQUENCY |
VARCHAR(255) |
Yes |
Human-readable description of the frequency of the trigger. NULL if not condition type TIMER. |
|
CURRENT_REFRESH_START |
TIMESTAMP |
Yes |
The time the current in-progress refresh started. NULL if not currently refreshing. |
|
CURRENT_DURATION |
BIGINT |
Yes |
The number of milliseconds the in-progress refresh has been running. NULL if not currently refreshing. |
|
CURRENT_STORAGE |
BIGINT |
Yes |
The approximate byte size of the cache data currently being refreshed. NULL if not currently refreshing. |
|
CURRENT_CAUSE |
VARCHAR(20) |
Yes |
The reason the cache is refreshing. NULL if not currently refreshing. Can be MANUAL, SCHEDULED, EXPIRED, or ON_DEMAND. |