Monday, October 25, 2010

chopt utility

(originally published at Pythian)
There is a new tool came with Oracle 11g Rel.2 that helps to modify options in
installed oracle home (Enabling and Disabling Database Options)
It is very simple and straightforward utility that recompiles database kernel
with different flags.
[oracle@r1 bin]$ chopt
chopt <enable|disable> <option>
dm = Oracle Data Mining RDBMS Files
dv = Oracle Database Vault option
lbac = Oracle Label Security
olap = Oracle OLAP
partitioning = Oracle Partitioning
rat = Oracle Real Application Testing
e.g. chopt enable rat

There is no "list" command that can show installed options for the selected home
although it can be helpful and useful to have such option.

Initially enabled options can possibly be seen in $ORACLE_HOME/install/make.log file
(flags were set as compilation options for but it can be changed over time
and not always relfect the current configuration.

Knowing that there is XML file for properties of oracle home wouldn't be
a good place to track list of oracle home configured options?

And finally the tool does not take into account several options at once, it simply ignores
all parameter after the second one:

[oracle@r1 bin]$ chopt enable dm dv

Writing to /u01/app/oracle/product/11.2.0/dbhome_1/install/enable_dm.log...
/usr/bin/make -f /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/lib/ dm_on
/usr/bin/make -f /u01/app/oracle/product/11.2.0/dbhome_1/rdbms/lib/ ioracle
[oracle@r1 bin]$

Have a good day!

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