Enabling archivelog in RAC

Question

Hello dear friends,
I want to enable archivelog mode in oracle 10.2 in RAC environment.
who can help me in its steps ?

Answer 1

Step how to convert noarchive log database in to archive log on ASM
First take out the one instance from cluster to perform d maintenance tasks
1)     SQL> alter system set cluster_database=true scope=spfile sid='approd1';
2)     SQL> shutdown immediate
3)     Start the single instance database which we took out from cluster pair
4)     SQL> startup mount;
5)     Check the log_archive_dest ,if its blank , which is good for us , otherwise we have to clear it values actually log_archive_dest is making archive log in local file system and log_archive_log_n , we can use it for both local , remote and ASM locations,so we will use log_archive_dest_1 instead of log_archive_dest
6)     SQL >Show parameter log_archive_dest
NAME TYPE VALUE
7)     Log_archive_dest string D:\oracle\DB10g\admin\ORCL\arc
Here in my environment the values of log_archive_dest is not NULL , so I have to reset the current values and put the null values
8)     SQL> alter system set log_archive_dest='' scope=spfile;
Any destination changes that you make take effect at the next log switch(automatic or manual) so restart the database and logon again
9)     SQL> shutdown immediate
10)     Again start the database in mount mode ( maintenance mode)
11)     Startup mount
12)     
13)     Check the values of t again and make sure log_archive_dest should be blank or unset .We can’t use log_archive_dest or log_archive_dublex with db_recover file parameter , so that why I m using logarchive_log_1 parameter
14)     SQL> alter system set log_archive_dest_1='LOCATION=+DATA/';
15)     SQL> alter system set cluster_database=true scope=spfile sid='approd1'
16)     Start the database
17)     Startup