Solaris

So you cannot use the slice 4; you would need to delete the swapfile on it, before you can use it for another purpose.
To follow up my idea in using the /export/home, could you run a

Code:

du -k /export/home

to see if there is any else data, besides the swapfile.

the output is:

Code:

# du -k /export/home
8       /export/home/lost+found
1       /export/home/sae/activation
1172    /export/home/sae/INdeleted
279     /export/home/sae/tumrecon
1       /export/home/sae/anni
1       /export/home/sae/Anni
251085  /export/home/sae
2349278 /export/home
#

Well, the most simple plan is to increase /var to 2GB.
With these steps
0. be sure you can login to a ILO, connect to the console, and login as root - you need that only in the case of a system recovery
1. create another 2 GB swapfile on /export/home, and add it to swap
2. delete the partition /dev/dsk/c1t0d0s4 from swap
3. in format -> partition, change the flag from swap to var
4. create a new file system on /dev/rdsk/c1t0d0s4
5. mount /dev/dsk/c1t0d0s4 to /mnt
6. copy over the data from /var to /mnt, using tar or cpio
7. verify that /mnt looks like /var, then umount the /mnt
9. in /etc/vfstab, change the /var line from /dev/dsk/c1t0d0s3 /dev/rdsk/c1t0d0s3 to /dev/dsk/c1t0d0s4 /dev/rdsk/c1t0d0s4
9a. in /etc/vfstab, change the swap line from /dev/dsk/c1t0d0s4 to the new swapfile
10. reboot with "shutdown -g 0 -i 6 -y", keep fingers crossed that it comes up
If this is new for you, you should first practice on a non-productive system.