Description
ob_trace_info is used to relay trace information that can eventually be persisted to the redo log.
Privilege requirements
Query variables
Both the
systenant and user tenants can view the values of session system variables by using theSHOW VARIABLESstatement or theSYS.TENANT_VIRTUAL_SESSION_VARIABLEview in Oracle mode and theinformation_schema.SESSION_VARIABLESview in MySQL mode.Modify variables
For the
systenant and all user tenants, you can directly modify the values of the Session system variables of the current tenant.
Attributes
| Attribute | Description |
|---|---|
| Parameter type | Varchar |
| Default value | Empty string |
| Value range | The range of the character length of the string is [0, 4096]. |
| Scope | Session |
| YES or NO | Yes, supported with the SET statement. |
Examples
Specify to transmit trace logs.
obclient> SET ob_trace_info='my_trace_info';