SOA Purge using delete_instances on SNAP

Question

Hi,
We have SOA 11g 11.1.1.5. In our Production Database our SOA schema size is over 1.5 TB. The current purge script we have is not deleting all the instances and so the Database size is growing. We decided to use the below as we really don't need any data beyond 1 week.
SOA_SOAINFRA.soa.delete_instances(
   min_creation_date => min_creation_date,
   max_creation_date => max_creation_date,
   batch_size => batch_size,
   max_runtime => max_runtime,
   retention_period => retention_period,
   ignore_state => true,
   purge_partitioned_component => false);
In order to use this as a scheduled job we want to delete the old data first. It's taking way too long to even delete even a one week of old data. So we want to see if the below approach will work.
Take the SNAP of Production Database and then run the above script and purge the data.
Reclaim the space following Oracle Note "How to Free Space from LOB Segments in the SOA Schema (Doc ID 1380989.1)"
Use this version of SNAP for the Production Database.
Any feedback is appreciated
Thanks

Answer 1

Hi Vipin,
Thanks for your replay, I even tried with the commands you mentioned. I was trying to include the time frame in the below purge script it is not working:
DECLARE
MAX_CREATION_DATE timestamp;
MIN_CREATION_DATE timestamp;
batch_size integer;
max_runtime integer;
retention_period timestamp;
BEGIN
MIN_CREATION_DATE := to_timestamp('2010-01-01','YYYY-MM-DD');
MAX_CREATION_DATE := to_timestamp('2010-01-31','YYYY-MM-DD');
max_runtime := 60;
retention_period := to_timestamp('2010-01-31','YYYY-MM-DD');
batch_size := 10000;
soa.delete_instances(
min_creation_date => MIN_CREATION_DATE,
max_creation_date => MAX_CREATION_DATE,
batch_size => batch_size,
max_runtime => max_runtime,
retention_period => retention_period,
purge_partitioned_component => false);
END;