The IMPORT_TABLE_STATS procedure imports table-level statistics.
Applicability
This topic applies only to OceanBase Database Enterprise Edition. OceanBase Database Community Edition provides only the MySQL mode.
Syntax
DBMS_STATS.IMPORT_TABLE_STATS (
ownname VARCHAR2,
tabname VARCHAR2,
partname VARCHAR2 DEFAULT NULL,
stattab VARCHAR2,
statid VARCHAR2 DEFAULT NULL,
cascade BOOLEAN DEFAULT TRUE,
statown VARCHAR2 DEFAULT NULL,
no_invalidate BOOLEAN DEFAULT FALSE,
force BOOLEAN DEFAULT FALSE,
stat_category VARCHAR2 DEFAULT DEFAULT_STAT_CATEGORY
);
Parameters
Parameter |
Description |
|---|---|
| ownname | The username. If the username is set to NULL, the current logon username is used by default. |
| tabname | The name of the table. |
| partname | The name of the table partition. If the table is partitioned and partname is NULL, global statistics and partition column statistics are imported. |
| stattab | The name of the user statistics table from which the statistics are retrieved. |
| statid | Note The current version does not support this parameter. |
| cascade | Specifies whether to export column and index statistics on the table. The value TRUE indicates yes. |
| statown | The username of the user statistics table from which the statistics are retrieved. |
| no_invalidate | Note The current version does not support this parameter. |
| force | Specifies whether to perform forced import and ignore the lock status. Default value: FALSE. If you set the value to TRUE, statistics will be imported even if they are locked. |
| stat_category | Note: The current version does not support this parameter. |
Exceptions
Error code |
Description |
|---|---|
| ORA-20000 | The object does not exist, or you do not have the required privileges. |
| ORA-20001 | The values in the user statistics table are invalid or inconsistent. |
Considerations
To call this procedure, you must be the owner of the table. For objects in the
systenant, you must be the owner of the table or have theSYSDBAprivilege to call this procedure.You cannot export or import statistics across databases that use different character sets.
Examples
Import the statistics on the test_stat table of the testUser01 user into the tbl1 table of the testUser02user.
obclient> CALL DBMS_STATS.IMPORT_TABLE_STATS('testUser01', 'tbl1', stattab=>'test_stat',
statown=>'testUser02');
Query OK, 0 rows affected