Alter tablespace

Question

hi all, what do the following means ?
1) ALTER TABLESPACE MYTABSPACE LOGGING
2) ALTER TABLESPACE MYTABSPACE NOLOGGING
regards,
Kong

Answer 1

From the documentation:
logging_clause
You should read that page. An excerpt:
Only the following operations support the NOLOGGING mode:
DML:
Direct-path INSERT (serial or parallel)
Direct Loader (SQL*Loader)
DDL:
CREATE TABLE ... AS SELECT
CREATE TABLE ... LOB_storage_clause ... LOB_parameters ... NOCACHE | CACHE READS
ALTER TABLE ... LOB_storage_clause ... LOB_parameters ... NOCACHE | CACHE READS (for specify logging of newly created LOB columns)
ALTER TABLE ... modify_LOB_storage_clause ... modify_LOB_parameters ... NOCACHE | CACHE READS (to change logging of existing LOB columns)
ALTER TABLE ... MOVE
ALTER TABLE ... [all partition operations that involve data movement]
ALTER TABLE ... ADD PARTITION (hash partition only)
ALTER TABLE ... MERGE PARTITIONS
ALTER TABLE ... SPLIT PARTITION
ALTER TABLE ... MOVE PARTITION
ALTER TABLE ... MODIFY PARTITION ... ADD SUBPARTITION
ALTER TABLE ... MODIFY PARTITION ... COALESCE SUBPARTITION
ALTER TABLE ... MODIFY PARTITION ... REBUILD UNUSABLE INDEXES
CREATE INDEX
ALTER INDEX ... REBUILD
ALTER INDEX ... REBUILD PARTITION
ALTER INDEX ... SPLIT PARTITION