[Amit Bansal]

Due to bug 12711827 in 11.2.0.2, huge CHM(Cluster Health Monitor) files can be created in Grid Home. You can apply Patch 10165314 to fix this issue. As quick fix, you can stop the resource ora.crf and cleanup files. You can find files location using below command

[root@devdb-002 devdb-002]# $ORACLE_GRID/bin/oclumon manage -get reppath

CHM Repository Path = /oragrid/product/11.2.0.2/crf/db/devdb-002

 Done 

e.g List of files on one of my dev box. Notice that crfclust.bdb grew to 96G

[root@devdb-002 devdb-002]# ls -lhtr
total 106G
-rw-r----- 1 root root 8.0K Mar 22 03:01 repdhosts.bdb
-rw-r----- 1 root root  24K Mar 22 03:10 __db.001
-rw-r----- 1 root root 8.0K Mar 22 03:11 crfconn.bdb
-rw-r--r-- 1 root root 115M Jan 20 00:56 devdb-002.ldb
-rw-r----- 1 root root  16M Jan 20 07:02 log.0000064367
-rw-r----- 1 root root 1.2M Jan 20 07:08 __db.005
-rw-r----- 1 root root  56K Jan 20 07:08 __db.006
-rw-r----- 1 root root 2.4G Jan 20 07:08 crfloclts.bdb
-rw-r----- 1 root root  16M Jan 20 07:09 log.0000064368
-rw-r----- 1 root root 2.1M Jan 20 07:09 __db.004
-rw-r----- 1 root root 2.6M Jan 20 07:09 __db.003
-rw-r----- 1 root root 392K Jan 20 07:09 __db.002
-rw-r----- 1 root root 1.5G Jan 20 07:09 crfts.bdb
-rw-r----- 1 root root 2.3G Jan 20 07:09 crfhosts.bdb
-rw-r----- 1 root root 2.0G Jan 20 07:09 crfcpu.bdb
-rw-r----- 1 root root  96G Jan 20 07:09 crfclust.bdb
-rw-r----- 1 root root 2.2G Jan 20 07:09 crfalert.bdb

Stop the resource ora.crf and then cleanup files

[root@devdb-002 devdb-002]# $ORACLE_GRID/bin/crsctl stop res ora.crf -init
CRS-2673: Attempting to stop 'ora.crf' on 'devdb-002'
[root@devdb-002 devdb-002]#rm -f *.bdb

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