to check extents in tables on a database for more than 7 extents:
select tabname Tabla, count(*) Fragmentos, sum(size) Tamaqo from sysextents where dbsname = 'dbname' group by tabname having count(*) > 7 order by 2 DESC, 1
either you must use for a particular table in a database...
Dbexport do not management more than 2Gb in a tape, you must use option -s with maximun of 2Gb, when a tape is full (2 Gb) dbexport prompt for the next tape.
The tunning consist of three elements, Disk, Memory o CPU, you can see where the problem is using system commands and informix utilities (I think onstat -p is very useful).
it's recomendable start with disk (the most slow device), review spaces, extents in your tables, queues (onstat -g ioq)...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.