The following examples show how to do an export into a compressed file (gzip) in one single step avoiding wasted disk space.

momo@cujox:~ $ mkfifo fifo_dbexport_20081119.dmp
momo@cujox:~ $ nohup exp scott/tiger tables=(TABLE_1, TABLE_2, TABLE_3) FILE=fifo_dbexport_20081119.dmp LOG=dbexport_20081119.log &
momo@cujox:~ $ nohup gzip < fifo_dbexport_20081119.dmp > real_db_export_20081119.dmp.gz &
momo@cujox:~ $ rm fifo_dbexport_20081119.dmp

momo@cujox:~ $ mkfifo fifo_dbimport_20081119.dmp
momo@cujox:~ $ nohup gzip -d < real_db_export_20081119.dmp.gz > fifo_dbimport_20081119.dmp &
momo@cujox:~ $ nohup imp scott/tiger tables=(TABLE_1, TABLE_2, TABLE_3) IGNORE=Y FILE=fifo_dbimport_20081119.dmp LOG=dbimport_20081119.log &
momo@cujox:~ $ rm dbimport_20081119.dmp

SQL> ALTER TABLE <table_name> MOVE TABLESPACE <new_tablespace_name>;

WARNING: By doing so, all indexes associated to the moved table will no longer useful and must be rebuilt as the following:

SQL> ALTER INDEX <index_name> REBUILD;

be available and must be recreated.

SQL> ALTER INDEX <index_name> REBUILD TABLESPACE <new_tablespace> [ STORAGE (storage_clause) ];

In the need of moving all indexes from one tablespace to another, the SQL script below can
be used to generate a final SQL script that does all moves sequentially.

set heading off
set feedback off
set linesize 160;
set pagesize 60;

connect system/system

!rm -f rebuildIndexes.sql
spool rebuildIndexes.sql
prompt connect system/system
SELECT ‘alter index ‘ || owner || ‘.’ || index_name ||
‘ rebuild tablespace NEW_TS STORAGE (INITIAL 64K);
FROM all_indexes
WHERE OWNER in (‘AA’, ‘BB’, ‘CC’, ‘DD’) and
TABLESPACE_NAME = ‘MY_TS’ AND PARTITIONED = ‘NO’
ORDER BY NUM_ROWS ASC
/
spool off

The above statement will produce the final SQL script for moving all indexes at once.

# set our custom yellow prompt
PS1=’\[33[1;33m\]\u\[33[1;37m\]@\[33[1;33m\]\h\[33[1;37m\]:\[33[1;33m\]\W \[33[1;33m\]\$ \[33[0m\]‘

# set our custom red prompt to visually identified root
PS1=’\[33[1;31m\]\u\[33[1;37m\]@\[33[1;31m\]\h\[33[1;31m\]:\[33[1;31m\]\W \[33[1;31m\]\$ \[33[0m\]‘

I recommend to save into a separate text file (say orasids.sh) in your oracle $HOME directory and source from .bash_profile as its last line: or in alternatives, you can source at any time as follows

# source orasids.sh

Of course this file must be chown’ed 750.

#!/bin/bash
#
function showsid  () { echo -en “ORACLE_SID: $ORACLE_SID\n” ;};
function db01test  () { export ORACLE_SID=db01test; showsid ;};
function prod  () { export ORACLE_SID=prod; showsid ;};
function nosid    () { unset ORACLE_SID; showsid ;};
showsid
#
# end-of-file