The following is a description of the Export parameters that may be specified, either on a command line or in a parameter file:
Specifies the size, in bytes, of the buffer used to fetch rows. This parameter determines the maximum number of rows in an array fetched by Export as:
rows = buffer / maximum_row_size
If you specify zero, Export fetches one row at a time. Tables with LONG, LOB, BFILE, REF, ROWID, or type columns are always fetched one row at a time. BUFFER applies only to conventional path export, and has no effect on a direct path export. The default is operating system dependent.
Specifies how Export manages the initial extent for table data. The default, COMPRESS=Y, causes Export to write a CREATE object statement for use in a subsequent import that will cause the object to be created with a single initial extent. If COMPRESS=N is specified, Export uses the current storage parameters, including the values of the INITIAL extent size and the NEXT extent size.
Specifies whether Export uses the SET TRANSACTION READ ONLY statement to ensure that the data seen by Export is consistent to a single point in time and does not change during the execution of the EXP command. You should specify CONSISTENT=Y when you anticipate that other applications will update the database after an export has started. The default is CONSISTENT=N.
Specifies whether the Export utility exports table constraints. The ...