Decision on File system management in Oracle+SAP

Question

Hi All,
In my production system we use to have /oracle/SID/sapdata1 and oracle/SID/sapdata2. Initially there was many datafiles assigned to the table sapce PSAPSR3, few as autoextend on and few as autoextend off. As per my understanding DB02 shows you the information just tablespace wise it will report AUTOEXTEND ON as soon as at least one of the datafiles has AUTOEXTEND ON. In PSAPSR3 all the datafile with autoextend ON are from SAPDATA1 which has only 50 GBs left. All the files as Autoextend OFF are from SAPDATA2 which has 900 GBs of sapce left.
Now the question is :
1.Do I need to request for additional space for SAPDATA1 as some of the tablespaces are at the edge of autoextend and that much space is not left in the FS(sapadat1) , then how will they extend? DB growth is 100GB per month.
2.We usually were adding 10 GB of datafile in the tablespace with 30GB as autoextend.
Can we add another datafile from sapdata2 this time with autoextend ON and the rest will be taken care automatically.
Pleae suggest.
Regards,
VIcky

Answer 1

Hi Vicky,
As you have 100GB/month growth suggestion here would be
1) Add 2 more mount points sapdata3 and sapdata4 with around 1 TB space.
   This is to distribute data across 4 data partitions for better performance
2) As sapdata1 has datafiles with auto extend ON, you need to extend the file system to 500 GB atleast so that whenever data is written on datafiles under sapdata1, it will have space to grow using autoextend feature. Without sufficient disk space it may lead to space problem and transaction may result in dump.
3) No need to change anything on sapdata2 as you already have 900GB free space
Hope this helps.
Regards,
Deepak Kori