how can i increase the dbspace for rootdbs cos one of my database is intialize to this dbspace
if cannot how can i change the dbspace?

Hi, you can increase the size of dbspace only by adding additional chunks.
You can do it with "onspaces -a dbspacename -p path_to_device_or_file -s size -o offset" command.
If you want to move database to another dbspace the most simple way is:

Export the database. dbexport dbname
Drop the database.
Import the database into the dbspace you want. dbimport dbname -d
dbspacename -l buffered ( Use buffered only if you want buffered
logging )

Hope this helps

i got this error shared memory not initialized for INFORMIXSERVER

anyone have any idea y?

See the informix system message log file(MSGPATH parameter in onconfig file) for additional information.

Hey gemgem... I would advise to get some training ASAP...this is basic stuff you are asking