SHMMAX max memory

[rudy_3]

i have on my system 5 gb and i want to assign to sybase database 4 GB but i need to change SHMMAX to more then 4GB but it is not happening how can i make the memory usage bigger

[Peter Godron · Accepted solution]

rudy,
as you don't mention OS level, possible solution (11.11):
PHKL_30196

[RAC_1]

What version of OS? What version of Sybase 32/64 bit?

[rudy_3]

sorry about that
11.11

[rudy_3]

sybase 64 b

[Peter Godron]

rudy,
another patch found:
PHKL_24032
seems there is whole raft of them out there

[rudy_3]

do u think a full system bk is needed or not really ??

[Peter Godron]

rudy,
first ensure that these are the correct patches for your OS and that all the symtoms match. Then it depends on the criticality of the server, but normally you can back out a patch if you really need to.

[RAC_1]

Full system backup not required. But make sure that you are backing up old kernel.
cp /stand/vmunix /stand/vmunix.old
cp /stand/system /stand/system.old
cp -r /stand/dlkm /stand/dlkm.old

[rudy_3]

is it possible to bother you to send me the proper procedure of backing up the kernel and the system if you dont mind and what are the proper files to backup and the proper procedure to recover if you dont mind