OIC Gen2 to Gen 3 Upgrade - Key things to be followed
Recently I had worked on OIC Gen2 to Gen 3 Upgrade. Below is the impact analysis by executing OIC Gen2 to OIC3 upgrade for one of the non-prod instance as pilot work.
Below are the few notes from upgrade experience.
- Upgrade Issues encountered
- Post OIC3
upgrade, the OIC Gen2 activity stream will not be available, unless the
activity stream is redirected to OCI object storage.
- Instance ID
is String (alphanumeric) in OIC3 but data type is Integer in OIC Gen2 - This
has huge impact on almost all the integrations as we heavily persisted
the instance ID for E2Etracking purpose as part of the orchestration.
- OIC3 File
Sever IP changed. OIC3 SFTP connections needs to be updated. Also if any
of the participating application is doing any IP whitelisting, new OIC3
IP has to be added.
- OIC3 doesn’t
support the Basic Authentication for any of the OOTB OIC REST API
(Connections, Integrations etc). The same API invoked using Basic
Authentication in OIC Gen2.
- When the OIC
service needs to be invoked via Adapter - REST/SOAP, the endpoint should
have Runtime Host / URL
- In Gen2,
default data retention at domain level is 3 days. In OIC3, data retention
is at integration level and during the activation need to select the one
of the below option
- Production :
32 days
- Audit : 8
days
- Debug : 24 hours
- Upgrade Observations
- OCI function
- In Gen2, API Gateway needs to be setup in order to expose OCI function
as REST API to external world (OIC). In OIC3, OCI function can be
directly invoked using OCI function activity.
- OIC3 Uses the
Oracle Redwood Theme (look & feel)
- OIC3 Design
time URL and Run time URL are different
- Connection
can be created from integration development canvas
- Menu item
'Integration' changed to 'Design'
- Menu item
'Monitoring' changed to 'Observability'
- Menu item
'Tracking' changed to 'Instances'
- Cut and past
the activity added in OIC3
- OIC3 doesn't
have backward compatibility
- Parallel
activity added in OIC2. currently in Gen2, parallel activity handled
using 'foreach' activity
- In OIC2, Read
File Segment operation reads only 200 records per read and the value
cannot be modified. However in OIC3, Chunk Read size is allowed to
modify. The minimum value is 200 and maximum value is 2000 records per
read.
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