Mastering the Oracle Stack, One Post at a Time.
Oracle Database, the related services (cloud) and various options in the database.
Global temporary table data is stored in the temporary tablespace (where no redo will be generated on the DML operations). When DML operations are performed on global temporary table, for read consistency undo must be generated. Such undo records are written to undo tablespace, and thus redo generated on the undo writes. If you perform … Read more
In pre-12c database releases, VARCHAR2, NVARCHAR2 data types were limited to 4000 bytes and RAW data type was limited to 2000 bytes. If there is a need to store more data in VARCHAR2 column, you can in 12c after setting the parameter MAX_STRING_SIZE to EXTENDED. With setting MAX_STRING_SIZE to EXTENDED, you can store up to … Read more