Hi Friends
This is my first blog i need to share some important information for db2. We are are facing File system space issue and using High Water Mark concept to
reduce the space and doing calculation for the same here below check the below script to find the tablespace where we can perform the HWM and how much
space we can reclaim . All the feedback and suggestions are welcome.
#!/usr/bin/ksh
#su - db2<SID>
db2 connect to <SID>
GFILE=/tmp/hwmCheck.log
>$GFILE
echo $SAPSYSTEMNAME >> $GFILE
echo "=============================================" >> $GFILE
echo " Total Reclaimabile Space for <SID> (Hostname) "> $GFILE
echo "=============================================" >> $GFILE
db2 "SELECT varchar(TBSP_NAME,20) as TableSpace , ((((TBSP_PAGE_TOP * TBSP_PAGE_SIZE)/1000) - ((TBSP_USED_PAGES * TBSP_PAGE_SIZE)/1000)) / 1024 ) as Reclaimable_MB from TABLE(MON_GET_TABLESPACE
(
'',-2)) where TBSP_TYPE = 'DMS' and (((((TBSP_PAGE_TOP * TBSP_PAGE_SIZE)/1000) - ((TBSP_USED_PAGES * TBSP_PAGE_SIZE)/1000)) / 1024 ) / 1024 ) > 0 and TBSP_AUTO_RESIZE_ENABLED = 1" >> $GFILE
TOTAL=$(db2 "SELECT sum(((((TBSP_PAGE_TOP * TBSP_PAGE_SIZE)/1000) - ((TBSP_USED_PAGES * TBSP_PAGE_SIZE)/1000)) / 1024 ) / 1024) from TABLE (MON_GET_TABLESPACE('',-2)) where TBSP_TYPE = 'DMS' and
(((((TBSP_PAGE_TOP * TBSP_PAGE_SIZE)/1000) - ((TBSP_USED_PAGES * TBSP_PAGE_SIZE)/1000)) / 1024 ) / 1024 ) > 0 and TBSP_AUTO_RESIZE_ENABLED = 1")
TOTAL=$( echo $TOTAL | awk '{ print $3 }')
echo "" >> $GFILE
echo "=============================================" >> $GFILE
#echo "Script Written By : Sadiq Iqbal" >> $GFILE
#print $TOTAL
print $GFILE
cat $GFILE
#cat $GFILE|mail -s "<SID> - Total Reclaimable GB : `echo $TOTAL | awk ' {print $3 }'`" -c "sadiqiqbal4u@gmail.com" sadiqiqbal4u@gmail.com
mail -s "<SID> - Total Reclaimable GB : $TOTAL"sadiqiqbal4u@gmail.com < $GFILE
#rm $GFILE
db2 disconnect <SID>
db2 terminate
exit
Note:-We can get the tablespace list on /tmp/hwmCheck.log
Thanks
Sadiq
