memory pools of onstat -g ses

Could Any one Please explain me the memmory Polls section of onstat -g ses 12378 Is this the normal in informix INFORMIX-OnLine Version 7.23.UC2 -- On-Line -- Up 13 days 18:11:16 -- 416472 Kbytes session #RSAM total used id user tty pid hostname threads memory memory 691 navuser console 1894 cali.fmr 1 344064 155496 tid name rstcb flags curstk status 16576 sqlexec c03fb58 Y--P--- 1872 c03fb58 cond wait(netnorm) Memory pools count 4 name class addr totalsize freesize #allocfrag #freefrag 691 V c79a018 245760 108616 419 48 691_SORT_0 V c2c2018 32768 32024 12 5 691_SORT_1 V c91e018 32768 15904 7 2 691_SORT_2 V c9f0018 32768 32024 12 5 name free used name free used overhead 0 480 scb 0 128 opentable 0 8440 filetable 0 1000 ru 0 224 log 0 2136 temprec 0 3144 ralloc 0 85296 gentcb 0 8472 ostcb 0 2016 sort 0 18184 sqscb 0 8480 srtmembuf 0 216 rdahead 0 448 hashfiletab 0 280 osenv 0 2280 buft_buffer 0 10712 sqtcb 0 2448 fragman 0 544 shmblklist 0 568 Sess SQL Current Iso Lock SQL ISAM F.E. Id Stmt type Database Lvl Mode ERR ERR Vers 691 - nav30prod NL Not Wait 0 0 7.20 Last parsed SQL statement : select parent_type, parent_code, child_sort_order,child_type,child_code,child_desc fromt_rollup_and_desc where parent_type = 'FG' order by 1,2,3