Reconfigure HAS and CSS for nonRAC ASM on 11.2

This document provides a procedure to configure/reconfigure the ( High Availability Service ) HAS and CSS resource on Oracle Grid Infrastructure for nonRAC setup

Solution

1） When you install grid infrastructure for single instance, at the end we run root.sh, that directs you to run the following script from root login:

<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl

This script configures the ohasd daemon ( inittab and rc.d entries ) and start the followings:

# ps -ef|grep ohas
root 17162 1 0 17:05 ? 00:00:00 /bin/sh /etc/init.d/init.ohasd run
grid 17186 1 0 17:05 ? 00:00:00 /oracle/grid/bin/ohasd.bin reboot

If there is a need to reconfigure HAS then, we can run the following scripts from root login:

<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl -delete
<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl

Note that the “roothas.pl -delete” will stop the cssd and diskmon resources ( and their dependent resources like ASM, Diskgroup, RDBMS ) and then will deconfigure HAS.

2009-09-15 19:03:33: Checking for super user privileges
2009-09-15 19:03:33: User has super user privileges
2009-09-15 19:03:33: Parsing the host name
Using configuration parameter file: /oracle/grid/crs/install/crsconfig_params
CRS-2673: Attempting to stop ‘ora.cssd’ on ‘db112’
CRS-2677: Stop of ‘ora.cssd’ on ‘db112’ succeeded
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on ‘db112’
CRS-2673: Attempting to stop ‘ora.diskmon’ on ‘db112’
CRS-2677: Stop of ‘ora.diskmon’ on ‘db112’ succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on ‘db112’ has completed
CRS-4133: Oracle High Availability Services has been stopped.
ACFS-9200: Supported
Successfully deconfigured Oracle Restart stack

If there is a malformed crs installation and CRS is not runing, one need to run rootcrs.pl and roothas.pl -deconfig with force options as follows:

<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl -deconfig -force

<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl -delete -force

<GridHome>/perl/bin/perl -I<GridHome>/perl/lib -I<GridHome>/crs/install <GridHome>/crs/install/roothas.pl

We can also stop/start, disable_auto_start/enable the HAS we use the following commands:

# cd <Grid Home>/bin
# ./crsctl stop has
# ./crsctl start has
# ./crsctl disable has
# ./crsctl enable has

Here also the ora.cssd and ora.diskmon dependency on HAS is maintained. You can also use -d option with the perl script run, in case you wish to debug the script ( perl expertise is needed ).

2） Unlike 10.2 / 11.1, CSS and Diskmon processes are resources in the OCR now.

$ crsctl status resource -t
————————————————————–
NAME TARGET STATE SERVER STATE_DETAILS
————————————————————–
Cluster Resources
——————
ora.cssd 1 ONLINE ONLINE db112
ora.diskmon 1 ONLINE ONLINE db112

Daemons no more run from ../init.d scripts:

grid 26182 1 0 20:11 ? 00:00:00 /oracle/grid/bin/diskmon.bin -d -f
grid 26091 1 0 20:09 ? 00:00:00 /oracle/grid/bin/cssdagent
grid 26126 1 0 20:09 ? 00:00:00 /oracle/grid/bin/ocssd.bin

The following commands should NOT be used to remove/add the CSS resource from OCR

#./crsctl delete resource ora.cssd
#./crsctl add resource ora.cssd -type

Instead use the delete and add commands of HAS to delete/add CSS/Diskmon.

From Oracle

——————————————————————————————————-

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