Set up export script and how to run it. Oracle 10gR2

Question

Can someone help explain this script to a newbie. I need to write a script to export all data from our Oracle 10gR2 Tru64 Unix to another system. We need to test how long a 200GB tablespace export will take writing directly to nfs mount on SAN.
1. The only option we have is to use a NFS Mount to the new SAN. ( there is no space on our existing system)
2. What needs to be declared to describe the environment in both Oracle and/or in the script to make it run?
3. Do I need to tell Oracle where the export directory is? (NFS Mount).
4. how is exp run? Do dba run via a XXX.sh script or SQLPLUS XXX.sql script?
5. how can I check the progress....
I don't understand the set up of the oracle environment lines, can someone help me?
Here is a sample script I found on our system....
1 #!/bin/sh
2 # /usr/users/oracle/nfsoraexpt_linux.sh
3 # Export up the specified instance of the db tar it to an nfs mount point and log it
4
5 # Set up the oracle instance and environment
6
7 ORACLE_SID=pdsprod; export ORACLE_SID
8
9 ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1; export ORACLE_HOME
10 PATH=/usr/bin:/u01/app/oracle/product/10.2.0/db_1/bin:/apg/0800/mercator:/usr/users/oracle/bin:.; export PATH
11
12 # Do logging and export the instance
13 rm /nfs_dir/oraexpt.log
14 echo `date` >> /nfs_dir/oraexpt.log
15 exp user/password file='/nfs_dir/pdsprod.exp' log='/nfs_dir/pdsprodexp.log' full=y direct=y feedback=5000000
16 #exp user/password file='/nfs_dir/pdsprod.exp' log='/nfs_dir/pdsprodexp.log' tablespace='ENC_DS_DATA' direct=y feedback=5000000
17 cat /nfs_dir/pdsprodexp.log >> /nfs_dir/oraexpt.log; rm /nfs_dir/pdsprodexp.log
18
19 echo `date` >> /nfs_dir/oraexpt.log
20 cd /nfs_dir
21 # gzip -f pdsprod.exp
22 ls -al pdsprod.exp >> oraexpt.log
23 mail -r email email2 < /nfs_dir/oraexpt.log
24
Any help for this first time user would be appreciated. Thanks

Answer 1

First it sets some environment variables in the shell.
Then it removes a log file.
Then it uses an obsolete tool to export some data.
Then it displays the contents of the log file.
Then it changes the present working directory.
Then it lists the files in the directory.
Then, presumably, it emails a copy of the log file somewhere.
In 10gR2 I would suggest throwing it away and using a proper tool to do the job such as RMAN or DataPump.
Additionally find someone to teach you how to navigate and perform basic tasks in Linux. This may help.
http://www.psoug.org/reference/unix_vi.html
as might Arup Nanda's excellent tutorial here:
http://www.oracle.com/technology/pub/articles/advanced-linux-commands/part1.html