The onstat -g seg Option

The onstat -g seg option prints shared-memory segment statistics. This option shows how many segments are attached and their sizes.

Example Output

Figure 89. onstat -g seg Output

IBM Informix Dynamic Server Version 10.00.UC1 -- On-Line -- Up 02:00:13 -- 101376 Kbytes
Segment Summary:
id        key         addr     size             ovhd     class blkused  blkfree
4001      1382438913  a000000    19918848       1760     R     4820     43
(shared)  1382438913  b2ff000    8392704        928      V     2049     0
3         1382438914  bb00000    9437184        952      V     2304     0
5         1382438915  c400000    8388608        920      V     1724     324
7         1382438916  cc00000   32505856       1656      V     7936     0
8         1382438917  eb00000    8388608        920      V     282      1766
9         1382438918  f300000    8388608        920      V     393      1655
10        1382438919  fb00000    8388608        920      V     393      1655
Total:    -          -         103809024        -        -     19901    5443 
   (* segment locked in memory)