| Oracle® Database Reference 11g Release 1 (11.1) Part Number B28320-01 |
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View PDF |
| Oracle® Database Reference 11g Release 1 (11.1) Part Number B28320-01 |
|
|
View PDF |
| Property | Description |
|---|---|
| Parameter type | String |
| Syntax | DB_SECUREFILE = { NEVER | PERMITTED | ALWAYS | IGNORE } |
| Default value | PERMITTED |
| Modifiable | ALTER SESSION, ALTER SYSTEM |
| Basic | No |
DB_SECUREFILE specifies whether or not to treat LOB files as SecureFiles.
Values:
NEVER
Any LOBs that are specified as SecureFiles are created as BasicFile LOBs. All SecureFile-specific storage options and features (for example, compress, encrypt, deduplicate) will cause an exception. The BasicFile LOB defaults will be used for storage options not specified.
PERMITTED
LOBs are allowed to be created as SecureFiles.
ALWAYS
All LOBs created in the system are created as SecureFile LOBs. If the LOB is not created in an Automatic Segment Space Managed tablespace, then an error will occur. Any BasicFile LOB storage options are ignored. The SecureFile defaults will be used for all storage options not specified.
IGNORE
The SECUREFILE keyword and all SecureFile options are ignored.
If the COMPATIBLE initialization parameter is not set to 11.1 or higher, then LOBs are not treated as SecureFiles.
If there is a LOB column with two partitions (one that has a tablespace for which ASSM is enabled and one that has a tablespace for which ASSM is not enabled), then LOBs in the partition with the ASSM-enabled tablespace will be treated as SecureFiles and LOBs in the other partition will be treated as BasicFile LOBs.
