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OceanBase Databaseoptimizer_dynamic_sampling specifies the level of dynamic sampling.
This variable is available in OceanBase Database V4.2.0 and later.
| Attribute | Description |
|---|---|
| Type | int |
| Default value | 1 |
| Value range | [0, 1] |
| Applicable scope |
|
| Read-only? | No |
| Involved in serialization? | Yes |
| Effective only after restart? | No |
Sample code
set optimizer_dynamic_sampling = 0;
set global optimizer_dynamic_sampling = 1;