2 ways to increase the swap space

1. By using SAM
   SAM > Disk and File Systems > Swap > Actions
   You can add the Device Swap or File System Swap.
   
2. By Command Line
   Create the logical volume for your secondary swap:
   # lvcreate -L 128 /dev/vg14
   
   NOTE: "-L 128" is the size of desired swap
   
   Verify the logical volume:
   # lvdisplay /dev/vg14/lvol15
   
   Use SAM to declare your new secondary swap or use the command line:
   # swapon /dev/vg14/lvol15
   
   Verify it has been added in "/etc/fstab" when using SAM, or add it manuallywhen using the command line.
   
   Example:
   /dev/vg14/lvol15 . swap defaults 0 0

How to increase the logical volume size?

Before increasin the size of the logical volume, always ensure that you do a make_tape_recovery and fbackup on the data stored on that particular logical volume that you wish to increase.

Always check your current and free lvol size before increasing so you can keep track and notice the differents.

We take a scenario where I would want to increase my /dev/vg00/lvol10 to 1GB

1. umount /dev/vg00/lvol10
   
2. lvextend -L 1024 /dev/vg00/lvol10
   
3. extendfs -F vxfs /dev/vg00/lvol10
   
4. mount /dev/vg00/lvol10 /myfolder
   
5. bdf

bdf command to check your increased lvol size.