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Operating Systems Solaris Swap Solaris 5.10
# 15  
Old 06-27-2014
Code:
#  swap -s
total: 12165728k bytes allocated + 7414976k reserved = 19580704k used, 697584k available

# 16  
Old 06-27-2014
Based on this output, it seems that you have only 3% of free swap space:
Code:
697584 / (19580704 + 697584) ≈ 3.4%

# 17  
Old 06-27-2014
Quote:
Originally Posted by bartus11
Based on this output, it seems that you have only 3% of free swap space:
Code:
697584 / (19580704 + 697584) ≈ 3.4%

Yes, that is what this server is complaining about.
# 18  
Old 06-27-2014
It's oracle. We have that problem any time a dba resizes SGA. That 100% usage in prstat is your clue.

Mount another new disk to the system. Use mkfile to create about about 400-500GB of swap space on the device. Rule of thumb with oracle: 2xRAM size == total swap space. Add the the swap with the swap -a command. This is sketchy on details, but if you need exact advice try:

For a direct attach disk, the example does not use mkfile, rather format:
UtahSysAdmin.com | How to add a swap drive to Solaris 10

No reboot required.

If you are using a SAN you can add a new lun and do the above. zfs is slightly different. Ask back for more help.
# 19  
Old 07-02-2014
Quote:
Originally Posted by jim mcnamara
It's oracle. We have that problem any time a dba resizes SGA. That 100% usage in prstat is your clue.

Mount another new disk to the system. Use mkfile to create about about 400-500GB of swap space on the device. Rule of thumb with oracle: 2xRAM size == total swap space. Add the the swap with the swap -a command. This is sketchy on details, but if you need exact advice try:

For a direct attach disk, the example does not use mkfile, rather format:
UtahSysAdmin.com | How to add a swap drive to Solaris 10

No reboot required.

If you are using a SAN you can add a new lun and do the above. zfs is slightly different. Ask back for more help.
I wish I could remember enough about the Oracle installations I've worked on to know if we didn't really need to do that. If the SGA is configured to use intimate shared memory (ISM), then it won't require any swap reservation because ISM is locked into RAM and can't be swapped out.

Note that you do NOT want to use DISM - that does require swap reservation.
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