Information about archivelog mode

Summary .

A simple script to find if archivelog mode is enabled.

select col1 ARCHIVELOG_STATUS from (
select 'Database log mode : ' || log_mode col1 from v$database
union
select 'Automatic archival : '|| value col1 from v$parameter where name like '%log_archive_start%'
union
SELECT 'Archiver enabled : ' || Archiver col1 FROM V$INSTANCE
union
select 'Archive processes : ' || count(*) col1 from V$ARCHIVE_PROCESSES where status = 'ACTIVE'
union
select 'Archive destination : ' || value from v$parameter where name like 'log_archive_dest_1'
) order by rownum desc;

All the archiving processes.

select * from v$archive_processes;

All the initialization parameters about archiving.

select * from v$parameter where name like '%archive%';

Modifying for example one parameter.

alter system set log_archive_max_processes = 4;