Where are Oracle files in RAC on Linux

Question

I took over a 2 nodes 11g RAC on Linux recently. The company hired a contract installed RAC late 2008 and did not left any document. Thus I do not know ORACLE_SID, ORACLE_HOME. I looked into oratab, it exists but is empty. oraenv exist but not help. I tried to start the RAC but could not find find Oracle binaries. I tried to look at listener configuration, but could not find listener.ora file. There are directories like /u02/app/oracle/product/11.1.0/db_1, but it is empty.
I did some thorough search using cmmands like below but find nothing useful.
find / |grep listener
find / |grep .ora
ls -Rl |grep <admin, init ...>
These files should be on the shared disk. Would shared diskmount under / in Linux? whould above commands apply to shared drive? Why I cannot find Oracle installed files.
Appreciate any opineans and sugegstion

Answer 1

user623617 wrote:
I took over a 2 nodes 11g RAC on Linux recently. The company hired a contract installed RAC late 2008 and did not left any document. Thus I do not know ORACLE_SID, ORACLE_HOME. I looked into oratab, it exists but is empty. oraenv exist but not help. I tried to start the RAC but could not find find Oracle binaries. I tried to look at listener configuration, but could not find listener.ora file. There are directories like /u02/app/oracle/product/11.1.0/db_1, but it is empty.
I did some thorough search using cmmands like below but find nothing useful.
find / |grep listener
find / |grep .ora
ls -Rl |grep <admin, init ...>
These files should be on the shared disk. Would shared diskmount under / in Linux? whould above commands apply to shared drive? Why I cannot find Oracle installed files.
Appreciate any opineans and sugegstionYour RAC is running ???
about /etc/oratab file. if you have create database by "dbca" you should find something.
By the way check about oracle processes on your sever.
$ ps -ef |grep oracle | grep smonYou should find processes about Oracle Instance.
Or check init*ora files at /u02/app/oracle/product/11.1.0/db_1/dbs/
$ ls /u02/app/oracle/product/11.1.0/db_1/dbs/*
*** PLease make you you have one ORACLE_HOME, not 2 ORACLE_HOME(for ASM and RDBMS)
about ORACLE_SID
example:
$ ps -ef |grep oracle | grep smon
oracle 27935 1 0 Jan13 ? 00:00:43 asm_smon_+ASM1
oracle 16161 1 0 Jun04 ? 00:23:02 ora_smon_DB1that mean... ORACLE_SID=DB1 for rdbms and use asm
OK... It' time to learn about your RAC and may help you about ORACLE Database
Example:
- find about CRS_HOME find crsctl in path bin
$ find /u02 -name crsctl -type f
/u02/app/oracle/crs/bin/crsctl
I assume: CRS_HOME = /u02/app/oracle/crs
OR find (root user)
# grep ORA_CRS_HOME\= /etc/init.d/init.crsd
ORA_CRS_HOME=/u02/app/oracle/crsAfter that check Cluster running ???
# /u02/app/oracle/crs/bin/crsctl check crs
CSS appears healthy
CRS appears healthy
EVM appears healthyIf not start it (root)
#/u02/app/oracle/crs/bin/crsctl start crsAfter that check about resources're register in CRS
$ /u02/app/oracle/crs/bin/crs_stat
$ /u02/app/oracle/crs/bin/crs_stat -tOr get information every resources:
$ export PATH=$PATH:/u02/app/oracle/crs/bin
$ for x in `crs_stat | grep NAME |awk -F\= '{print $2}' ` ; do crs_stat -p $x ; doneCheck them and post
Good Luck