Note
For V4.3.x, this view no longer records data starting from V4.3.5. For lock diagnostic data, see the GV$SYSTEM_EVENT view and the GV$OB_ACTIVE_SESSION_HISTORY view.
Purpose
This view displays the latch information of all OBServer nodes in the cluster.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| CON_ID | bigint(20) | NO | The tenant ID. |
| SVR_IP | varchar(46) | NO | The IP address. |
| SVR_PORT | bigint(20) | NO | The port number. |
| ADDR | varchar(256) | NO | This column is currently NULL. |
| LATCH# | bigint(20) | NO | The index of the latch class. |
| LEVEL# | bigint(20) | NO | The index of the latch level. |
| NAME | varchar(256) | NO | The name of the latch. |
| HASH | bigint(20) | NO | This column is currently 0. |
| GETS | bigint(20) | NO | The number of times a lock is successfully acquired. |
| MISSES | bigint(20) | NO | The number of times a lock enters a wait state. |
| SLEEPS | bigint(20) | NO | The total number of yields. |
| IMMEDIATE_GETS | bigint(20) | NO | The number of times a try_lock is successfully acquired. |
| IMMEDIATE_MISSES | bigint(20) | NO | The number of times a try_lock fails. |
| SPIN_GETS | bigint(20) | NO | The total number of spins. |
| WAIT_TIME | bigint(20) | NO | The total wait time for sleep. |