Note
- This view was renamed to GV$OB_ACTIVE_SESSION_HISTORY starting from V4.2.2.
- This view is available starting with V4.0.0.
Purpose
This view displays the active session history of all OBServer nodes in all tenants.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | The IP address of the server to which the sample belongs. |
| SVR_PORT | bigint(20) | NO | The port number of the server to which the sample belongs. |
| SAMPLE_ID | bigint(20) | NO | The unique ID of the sample on the server. |
| SAMPLE_TIME | datetime | NO | The time when the sample was collected. |
| CON_ID | bigint(20) | NO | The tenant ID. |
| USER_ID | bigint(20) | NO | The ID of the user of the sampled session. |
| SESSION_ID | bigint(20) | NO | The ID of the sampled session. |
| SESSION_TYPE | varchar(10) | NO | The session type. Valid values: |
| SESSION_STATE | varchar(7) | NO | The session state. Valid values: EVENT column. |
| SQL_ID | varchar(32) | NO | The SQL ID. |
| PLAN_ID | bigint(20) | NO | The ID of the plan of the sampled SQL in the plan cache. This ID is used to associate the sampling point with the plan. |
| EVENT | varchar(64) | NO | The description of the waiting event. |
| EVENT_NO | bigint(20) | NO | The internal ID of the waiting event. This ID is used to join with other tables. |
| EVENT_ID | bigint(20) | YES | The ID of the current waiting event.
NoteThis column is available starting with V4.2.2. |
| P1TEXT | varchar(64) | NO | The name of the first parameter of the waiting event. The name varies with the value of the EVENT column. |
| P1 | bigint(20) | NO | The value of the first parameter of the waiting event. |
| P2TEXT | varchar(64) | NO | The name of the second parameter of the waiting event. The name varies with the value of the EVENT column. |
| P2 | bigint(20) | NO | The value of the second parameter of the waiting event. |
| P3TEXT | varchar(64) | NO | The name of the third parameter of the waiting event. The name varies with the value of the EVENT column. |
| P3 | bigint(20) | NO | The value of the third parameter of the waiting event. |
| WAIT_CLASS | varchar(64) | NO | The type of the waiting event. |
| WAIT_CLASS_ID | bigint(20) | NO | The ID of the type of the waiting event. This ID is used to join with other tables. |
| TIME_WAITED | bigint(20) | NO | The total waiting time of the waiting event, in microseconds (us). |
| SQL_PLAN_LINE_ID | bigint(20) | YES | The ID of the SQL operator in the SQL plan at the time when the sample was collected. |
| GROUP_ID | bigint(20) | NO | The group information of the sampling point
NoteThis column is available starting with V4.2.3. |
| PLAN_HASH | bigint(20) unsigned | NO | The plan_hash of the current executed SQL command
NoteThis column is available starting with V4.2.4. |
| THREAD_ID | bigint(20) | NO | The ID of the thread to which the current active session belongs
NoteThis column is available starting with V4.2.4. |
| STMT_TYPE | bigint(20) | NO | The SQL type of the current active session
NoteThis column is available starting with V4.2.4. |
| TIME_MODEL | bigint(20) | NO | The time model information, which is a collection of all IN_XXX fields (such as IN_PARSE and IN_PL_PARSE).
NoteThis column is available starting with V4.2.4. |
| IN_PARSE | varchar(1) | NO | Indicates whether the session is performing SQL parsing at the time when the sample was collected. |
| IN_PL_PARSE | varchar(1) | NO | Indicates whether the session is performing SQL PL parsing at the time when the sample was collected. |
| IN_PLAN_CACHE | varchar(1) | NO | Indicates whether the session is performing plan cache matching at the time when the sample was collected. |
| IN_SQL_OPTIMIZE | varchar(1) | NO | Indicates whether the session is performing SQL parsing optimization at the time when the sample was collected. |
| IN_SQL_EXECUTION | varchar(1) | NO | Indicates whether the session is performing SQL execution at the time when the sample was collected. |
| IN_PX_EXECUTION | varchar(1) | NO | Indicates whether the session is performing parallel SQL execution at the time when the sample was collected. If the session is in this state, it must also be in the IN_SQL_EXECUTION state. |
| IN_SEQUENCE_LOAD | varchar(1) | NO | Indicates whether the session is fetching the value of an auto-increment column or a sequence at the time when the sample was collected. |
| IN_COMMITTING | varchar(1) | NO | Indicates whether the sampling point is in the transaction commit phase.
NoteThis column is available starting with V4.2.1. |
| IN_STORAGE_READ | varchar(1) | NO | Indicates whether the sampling point is in the storage read phase.
NoteThis column is available starting with V4.2.1. |
| IN_STORAGE_WRITE | varchar(1) | NO | Indicates whether the sampling point is in the storage write phase.
NoteThis column is available starting with V4.2.1. |
| IN_REMOTE_DAS_EXECUTION | varchar(1) | NO | Indicates whether the sampling point is in the DAS remote execution phase.
NoteThis column is available starting with V4.2.1. |
| IN_FILTER_ROWS | varchar(1) | NO | Indicates whether the sampling point is in the storage push-down execution phase.
NoteThis column is available starting with V4.2.2. |
| IN_RPC_ENCODE | varchar(1) | NO | This view displays the serialization operation being performed by the current SQL statement.
NoteThis view is available starting with V4.2.5 for V4.2.x. |
| IN_RPC_DECODE | varchar(1) | NO | This view displays the deserialization operation being performed by the current SQL statement.
NoteThis view is available starting with V4.2.5 for V4.2.x. |
| IN_CONNECTION_MGR | varchar(1) | NO | This view displays the connection operation being performed by the current SQL statement.
NoteThis view is available starting with V4.2.5 for V4.2.x. |
| PROGRAM | varchar(64) | YES | The name of the program being executed at the sampling point:
NoteThis view is available starting with V4.2.2. |
| MODULE | varchar(64) | YES | The MODULE value recorded at the time of sampling. This value is set by using the DBMS_APPLICATION_INFO.SET_MODULE package.
NoteThis view is available starting with V4.2.3. |
| ACTION | varchar(64) | YES | The ACTION value recorded at the time of sampling. This value is set by using the DBMS_APPLICATION_INFO.SET_ACTION package.
NoteThis view is available starting with V4.2.3. |
| CLIENT_ID | varchar(64) | YES | The CLIENT_ID value recorded at the time of sampling. This value is set by using the DBMS_APPLICATION_INFO.set_identifier package.
NoteThis view is available starting with V4.2.3. |
| BACKTRACE | varchar(512) | YES | This field is used for debugging. It records the code call stack at the time of the event. The value of this field is always NULL. |
| TM_DELTA_TIME | bigint(20) | YES | The time interval for calculating the time model, in microseconds
NoteThis view is available starting with V4.2.2. |
| TM_DELTA_CPU_TIME | bigint(20) | YES | The amount of time spent on the CPU during the TM_DELTA_TIME time period in the past
NoteThis view is available starting with V4.2.2. |
| TM_DELTA_DB_TIME | bigint(20) | YES | The amount of time spent on database calls during the TM_DELTA_TIME time period in the past
NoteThis view is available starting with V4.2.2. |
| TOP_LEVEL_SQL_ID | varchar(32) | YES | The ID of the top-level SQL statement
NoteThis view is available starting with V4.2.2. |
| IN_PLSQL_COMPILATION | varchar(1) | NO | The PL compilation status: Y/N
NoteThis view is available starting with V4.2.2. |
| IN_PLSQL_EXECUTION | varchar(1) | NO | The PL execution status: Y/N
NoteThis view is available starting with V4.2.2. |
| PLSQL_ENTRY_OBJECT_ID | bigint(20) | YES | The OBJECT ID of the top-level PL statement
NoteThis view is available starting with V4.2.2. |
| PLSQL_ENTRY_SUBPROGRAM_ID | bigint(20) | YES | The Sub project ID of the top-level PL statement
NoteThis view is available starting with V4.2.2. |
| PLSQL_ENTRY_SUBPROGRAM_NAME | varchar(32) | YES | The Sub project name of the top-level PL statement
NoteThis view is available starting with V4.2.2. |
| PLSQL_OBJECT_ID | bigint(20) | YES | The ID of the PL object being executed
NoteThis view is available starting with V4.2.2. |
| PLSQL_SUBPROGRAM_ID | bigint(20) | YES | The ID of the PL subprogram being executed
NoteThis view is available starting with V4.2.2. |
| PLSQL_SUBPROGRAM_NAME | varchar(32) | YES | The name of the PL subprogram being executed
NoteThis view is available starting with V4.2.2. |
| BLOCKING_SESSION_ID | bigint(20) | NO | If the current session is blocked, this field displays the ID of the session that is blocking the current session. Currently, this field is effective only in lock conflict scenarios. It displays the ID of the session that holds the lock.
Note
|
| TABLET_ID | bigint(20) | NO | The ID of the tablet that is being processed by the current SQL query.
Note
|
| PROXY_SID | bigint(20) | NO | The ID of the proxy session.
Note
|
| TX_ID | bigint(20) | NO | The ID of the current transaction.
Note
|
| DELTA_READ_IO_REQUESTS | bigint(20) | NO | The number of read requests between two sampling periods.
NoteFor V4.2.x, this column is available starting with V4.2.5 BP3. |
| DELTA_READ_IO_BYTES | bigint(20) | NO | The total size of files read between two sampling periods.
NoteFor V4.2.x, this column is available starting with V4.2.5 BP3. |
| DELTA_WRITE_IO_REQUESTS | bigint(20) | NO | The number of write requests between two sampling periods.
NoteFor V4.2.x, this column is available starting with V4.2.5 BP3. |
| DELTA_WRITE_IO_BYTES | bigint(20) | NO | The total size of files written between two sampling periods.
NoteFor V4.2.x, this column is available starting with V4.2.5 BP3. |
Sample query
Query the active session history of all OBServer nodes where the tenant is located.
obclient [oceanbase]> SELECT * FROM oceanbase.GV$ACTIVE_SESSION_HISTORY limit 1\G
The query result is as follows:
*************************** 1. row ***************************
SVR_IP: xx.xx.xx.xx
SVR_PORT: 2882
SAMPLE_ID: 1912993
SAMPLE_TIME: 2025-03-04 10:25:06.155640
CON_ID: 1001
USER_ID: 0
SESSION_ID: -9223372036854729409
SESSION_TYPE: BACKGROUND
SESSION_STATE: ON CPU
SQL_ID: NULL
PLAN_ID: 0
TRACE_ID: NULL
EVENT:
EVENT_NO: 0
EVENT_ID: NULL
P1TEXT:
P1: 0
P2TEXT:
P2: 0
P3TEXT:
P3: 0
WAIT_CLASS: OTHER
WAIT_CLASS_ID: 100
TIME_WAITED: 0
SQL_PLAN_LINE_ID: NULL
GROUP_ID: 0
PLAN_HASH: NULL
THREAD_ID: 82216
STMT_TYPE: NULL
TIME_MODEL: 0
IN_PARSE: N
IN_PL_PARSE: N
IN_PLAN_CACHE: N
IN_SQL_OPTIMIZE: N
IN_SQL_EXECUTION: N
IN_PX_EXECUTION: N
IN_SEQUENCE_LOAD: N
IN_COMMITTING: N
IN_STORAGE_READ: N
IN_STORAGE_WRITE: N
IN_REMOTE_DAS_EXECUTION: N
IN_FILTER_ROWS: N
IN_RPC_ENCODE: N
IN_RPC_DECODE: N
IN_CONNECTION_MGR: N
PROGRAM: T1001_LogService
MODULE: LogRestoreService
ACTION: RemoteLogWriter
CLIENT_ID: NULL
BACKTRACE: NULL
TM_DELTA_TIME: 1017574
TM_DELTA_CPU_TIME: 1017574
TM_DELTA_DB_TIME: 1017574
TOP_LEVEL_SQL_ID: NULL
IN_PLSQL_COMPILATION: N
IN_PLSQL_EXECUTION: N
PLSQL_ENTRY_OBJECT_ID: NULL
PLSQL_ENTRY_SUBPROGRAM_ID: NULL
PLSQL_ENTRY_SUBPROGRAM_NAME: NULL
PLSQL_OBJECT_ID: NULL
PLSQL_SUBPROGRAM_ID: NULL
PLSQL_SUBPROGRAM_NAME: NULL
BLOCKING_SESSION_ID: NULL
TABLET_ID: NULL
PROXY_SID: -9223372036854729409
TX_ID: NULL
DELTA_READ_IO_REQUESTS: 0
DELTA_READ_IO_BYTES: 0
DELTA_WRITE_IO_REQUESTS: 0
DELTA_WRITE_IO_BYTES: 0
1 row in set (0.052 sec)