RAC off

This article is about enabling/disabling RAC binaries

We  have the following options for checking status of various services

• RAC (Real Application Cluster)
• RAT (Real Application Testing)
• OLS (Oracle Label Security)
• DV (Database Vault)
• ASM (Automated Storage Management)
• OLAP (Oracle OLAP)
• PART (Oracle Partitioning)
• CTX (Context Management Text)

To verify options and/or enable/disable them:

$ cd $ORACLE_HOME/rdbms/lib
$ar -t libknlopt.a | grep -c {file}

Where {file} is:

• RAC – kcsm.o
• RAT – kecwr.o
• OLS – kzlilbac.o
• DV – kzvidv.o
• ASM – kfon.o
• OLAP – xsyeolap.o
• PART – kkpoban.o
• CTX – kciwcx.o

Sample Output:
mydb:oracle$ar -t libknlopt.a | grep -c kcsm.o
1

Here

If the output is 0, the option is disabled.
If the output is 1, the option is enabled.

How to Enable/Disable:

To enable or disable options, please look at the following commands:

$ make -f ins_rdbms.mk {option}
Where {option} is:

• RAC – rac_on / rac_off
• RAT – rat_on / rat_off
• OLS – lbac_on / lbac_off
• DV – dv_on / dv_off
• ASM – asm_on / asm_off
• OLAP – olap_on / olap_off
• PART – part_on / part_off
• CTX – ctx_on / ctx_off
• DM – dm_on / dm_off

An example:

cd $ORACLE_HOME/rdbms/lib
make -f ins_rdbms.mk rac_off --Disabling RAC binaries
make -f ins_rdbms.mk ioracle --Linking to Oracle binaries

Sample Output:Check output after disabled the oracle binaries by using following command

mydb:oracle$ar -t libknlopt.a | grep -c kcsm.o
 0

There is another new utility chopt available in Oracle11g Release 2 (11.2) for disable and enable binaries.
The chopt command takes care of relinking to the oracle after enable/disable binaries.

The sample command is as follows

chopt disable rat