Connecting DB2 Applications, including Mobile and …Mobile without the DB2 Adapter for z/OS Connect...

© Copyright IBM Corporation 2016. Technical University/Symposia materials may not be reproduced in whole or in part without the prior written permission of IBM.

Connecting DB2 Applications, including Mobile and Cloud, with

Data on z Systems

John Iczkovits – [email protected]

Paul Wirth – [email protected]

IBM Corporation

DB2 Washington Systems Center –

System z Growth

1IBM Systems Technical Events | ibm.com/training/events

© Copyright IBM Corporation 2016. Technical University/Symposia materials

may not be reproduced in whole or in part without the prior written permission of

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Performance data contained herein was generally obtained in a controlled, isolated environments. Customer examples are presented as illustrations of how

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Please Note

• IBM’s statements regarding its plans, directions, and intent are subject to change orwithdrawal without notice at IBM’s sole discretion.

• Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision.

• The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract.

• The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.

Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.




IBM.

Session objectives

• DB2 services & API ecosystem

• A few words about API economy

• What is and why z/OS Connect

• DB2 Adapter for z/OS Connect




IBM.

Mobile is primary91% of mobile users

keep their device within

arm’s reach 100% of

the time

Insights from

mobile data provide

new opportunities 75% of mobile shoppers

take action after

receiving a location

based messages

Mobile is about transactingEvidence: “cyber Monday”

Mobile must create

a continuous

brand experience90% of users use

multiple screens as

channels come

together to create

integrated experiences

Mobile enables the

Internet of ThingsGlobal machine-to-

machine connections

increasing dramatically

5 mobile trends with significant implications for the enterprise

5




IBM.

DB2 Services & API Economics




IBM.




IBM.




IBM.




IBM.




IBM.

z/OS Connect – What is it?

It’s about REST API support using JSON into your mainframe

environment in a way that enables you to best take advantage

of the assets that exist there:

Mobile or

Cloud

Ecosystem

CICS

IMS

Batch

OtherREST – Representational State Transfer …

the use of HTTP URLs that map to a ‘service’,

such as ‘query account’ or ‘update data’

JSON – JavaScript Object Notation … a

standard of representing data as a set of

name/value pairs. This is passed back and

forth along with REST request/responses

Where z/OS

Connect fits

• Liberty Profile Server

• Function IBM wrote to run

in Liberty Profile

• No charge function

provided with license

entitlement to WAS z/OS,

CICS, IMS and DB2

z/OS Connect

DB2




IBM.

Summary in One Picture

Liberty Profile for z/OS

z/OS

Connect

Servlet

CICS

IMS

DB2Interceptors

Service Providers

Data Transform

1

4

RESTful

JSON

3

5

6

7

8

z/OS Connect is software function that

runs in Liberty Profile for z/OS.

z/OS Connect is described and

configured in the Liberty server.xml file

z/OS Connect is designed to accept

RESTful URIs with JSON data

payloads

A ‘Service Provider’ is software

that provides the connectivity to

the backend system

server.xml

2

One part of z/OS Connect

is a servlet that runs in

Liberty Profile z/OS.

z/OS Connect provides the

ability to transform JSON to the

layout required by backend

‘Interceptors’ are callout points

where software can be invoked

to do things such as SAF

authorization and SMF activity

recording

Backend systems supported are

CICS, IMS, Batch, and DB2

1

2

3

4

5

6

7

8

BatchSMF SAF …




IBM.

Mobile without the DB2 Adapter for z/OS Connect (with on

the next slide)

13

DB2

for

z/OS

CICS

IMS

Batch

z/OS Connec

t

1. Without the DB2 Adapter for

z/OS Connect, access to DB2 for

z/OS data via z/OS Connect is

through CICS, IMS, and batch

programs

• Direct access to DB2 from z/OS

Connect is being worked on

2. References to JSON in this overview of z/OS Connect are NOT related to the JSON

support for DB2 for z/OS recently delivered for DB2 11

• JSON support for DB2 is a feature of the IBM DB2 Accessories Suite for z/OS V3.2 (a

no-charge offering) that enables DB2 for z/OS to be a JSON document store

• Allows applications to manage JSON documents in DB2 for z/OS using a new (API)

based on the MongoDB data model and query language

• Among other things, allows Java programs to access JSON data through the same

JDBC driver used for SQL access




IBM.

Secure and consistent enterprise connectivity for mobile and

cloud DB2 Adapter for z/OS Connect

•IBM WebSphere Liberty z/OS Connect – Shipped with WAS, CICS, IMS, and DB2

•Unifies z/OS connectors – a common solutions for mobile, cloud, and web

•Simplified integration – Hide complexity of connecting to z/OS using REST

Cloud-based

ServicesEnterprise

Systems

Integration

Enterprise

Applications

Enterprise

Data

On-Premise Enterprise APIs Enterprise

Transaction

Processing

IBM

WebSphere

Liberty

z/OS Connect

CICS,

IMS

Batch,

WAS

Cloud APIs

Mobile-Optimized APIs

Systems of Engagement Systems of Record

DB2 for z/OS GA Dec 11, 2015




IBM.

Customer Perspective

• Application programmers need to access and include DB2 data

in their applications. They want to use REST APIs and services

in order quickly create mobile friendly applications.

• Prior to DB2 Adapter for z/OS Connect, the primary options

available for providing REST APIs would require them to write

and deploy new WebSphere or Data Power applications to

accept the REST calls and transform them into ODBC/JCBC

driver calls to DB2.




IBM.

z/OS CONNECT & DB2 for z/OS

It’s about getting REST and JSON into your mainframe environment in a way that

enables you to best take advantage of the DB2 assets that exist there:

• WebSphere Liberty Profile for z/OS – WLP is a faster lightweight version of WebSphere

• Z/OS Connect – z/OS Connect is a special Java Servlet in WLP to handle connectivity to z/OS services,

HTTPS request and reply, REST/JSON message formatting and transformation, forward message to

registered service providers, configure services, discovery service, security, auditing for enterprise data.

• REST – Representation State Transfer – Stateless client-server protocol, typically using HTTP URLs that

map to a service, such as “query account” or “update data”

• JSON – JavaScript Object Notation – A standard of representing data as a set of name/value pairs. This is

passed back and forth along with REST request/responses




IBM.

https://mysite.com/CustomerApp/getCustomer?cn=1234

URI = Uniform resource identifier

Front-end perspective: RESTful services

• If the URI is understood by the receiving server, the implied action is taken

• Knowing what URIs the server supports is important, which is why z/OS Connect has a

discovery function that can be used to query for configured services and details on those

services

• RESTful services are growing in popularity because it’s easier to implement than other

Web service protocols such as SOAP, which involves XML and WSDL and parsing …

17

Mobile,

cloud

ecosystem




IBM.

It’s a way of passing data back and forth as a series of name/value pairs

{

"firstName": "John",

"lastName": "Smith",

"age": 25,

"address": {

"streetAddress": “1234 Main Street",

"city": “Anytown",

"state": "NY",

"postalCode": "10021-1234"

},

}

Data being passed in is

appended to the URL and

passed to the server

JSON can be passed back

to the client as well

Where JSON fits in

18

Mobile,

cloud

ecosystem

https://mysite.com/CustomerApp/getCustomer?cn=1234

URI = Uniform resource identifier




IBM.

Allows developers to query for a list of configured services, and

drill down for details on a given configured service

https://mysite.com/zosConnect/services

Query for configured services

https://mysite.com/zosConnect/services/serv1

Query for details on a given configured service

JSON object with list of exposed

services and their service URLs

JSON object with more details on

the specific service

The z/OS Connect discovery function

19




IBM.

Why z/OS Connect?

This represents another component to configure and maintain in your environment. So what value does it bring?

• Provides a common and consistent entry point

for mobile access to one or many backend

systems

• Provides tooling for streamlined creation of

REST services from z Assets by the developers

• Java, so runs on specialty engines (zIIP)

• Shields backend systems from requiring

awareness of RESTful URIs and JSON data

formatting

• Simplifies front-end functions by allowing them to

pass RESTful and JSON rather than be aware of

or involved in data transformation

• Support discovery of deployed services by other

systems, e.g., APIM

• Provides point for authorization of user to

invoke backend service

• Provides point for capturing usage

information using SMF

You could enable Mobile access

without z/OS Connect

z/OS Connect simplifies and

makes the environment more

consistent and manageable

• Potentially reduce network latency

• Scalability and failover support (RAS)




IBM.

Excellent Scaling with DB2 adaptor for z/OS connect

• DB2z Adaptor offers excellent scaling and achieves 108K simple look-up transaction per second with 360 clients

• Large portion of CPU spent in WLP servers, where the most of CPU usage is eligible with zIIP processors

19,253

37,66749,767

108,758

0

20000

40000

60000

80000

100000

120000

60 120 180 360

Tra

nsacti

on

per

seco

nd

# of clients

Transaction throughput ( per sec)




IBM.

Benchmark Configuration

• 6 way db2 data sharing on

z13 2 LPARs( 20CP, 64GB)

• T2 connection 70% zIIP eligible

• T4 connection 100% zIIP

eligible

• 6 DB2z Adaptor servers

• 60 users per DB2z Adaptor.

• 2 client zLinux lpars(16 IFLs)

with 180 users each.

https://stlabh2.svl.ibm.com:9443/zosConnect/services/item?action=invoke

• zIIPs usage increases due to the use of the WLP JAVA code

• Consider workload distribution and failover scenarios for WLP

https://stlabh2.svl.ibm.com:9443/zosConnect/services/item?action=invoke




IBM.

z/OS Connect and Data Sharing

• Each z/OS Connect (DB2 Adapter for z/OS Connect) server instance is tied/associated

with a single DB2 "catalog" (single non-DS DB2, OR a single DS Group).

• DB2 Adapter for z/OS Connect supports both JCC type-2 z/OS (uses RRS attach and

the target DB2 must be on the same LPAR) and type-4 (TCP/IP DRDA, target DB2 can

be on same LPAR or different one).

• When targeting a DB2 Data Sharing system, the DB2 Adapter for z/OS Connect can be

configured to use either "member specific" (ie. SSID for T2, member IP for T4) OR

"group" (ie. Group Attach ID for T2, group/DVIPA for T4) semantics.

• A high availability setup would likely include multiple DB2 Adapter for z/OS Connect

server instances which are targeting a DB2 Data Sharing group using the "group" type

semantics, all using TCP/IP Sysplex Distributor and JCC T4.




IBM.

Workload balancing across members

• In order to get/expose DB2 workload balancing, you need to be using the JCC type-4

setup and the DB2 group/DVIPA address.

• In addition, you could also use TCP/IP Sysplex Distributor with a group DVIPA for the

z/OS Connect servers to seamlessly distribute the incoming z/OS Connect Service

requests.




IBM.

Member failover with z/OS Connect up

• If the DB2 Adapter for z/OS Connect is configured to use JCC T4 and a DB2 group

DVIPA address, then the z/OS Connect activity will continue to run, only now having the

SQL routed/run on remaining members of the DB2 Data Sharing group.




IBM.

Multiple z/OS Connect to one member/subsystem

• It is possible to have more then one z/OS Connect (DB2 Adapter for z/OS Connect)

server instance connect to the same DB2 member and/or catalog.

• For example, a customer wants to isolate/partition a DB2 Adapter for z/OS Connect

Services for security reasons. You could have one DB2 Adapter for z/OS Connect

server that is used for "HR/Payroll" related services, and a different DB2 Adapter for

z/OS Connect server instance that is used for "online shopping" related services, even

though the underlying DB2 system is the same for both functions.




IBM.

DB2 Adapter for z/OS Connect - Why does it matter for DB2 Mobile

Enablement?

Mobile application developers want to use REST APIs and services in order quickly create mobile

friendly applications.

Prior to z/OS Connect and DB2 Adapter for z/OS Connect, the primary options available for providing

REST APIs would require customers to write and deploy new WebSphere or Data Power applications

to accept the REST calls and transform them into ODBC/JCBC driver calls to DB2.

• This typically required new server side applications to be written every time that a new REST API or service was

needed.

• Slow to develop and deploy new REST services

Using z/OS Connect and the DB2 Adapter for z/OS Connect:

• Mobile application developers can now easily access and include DB2 data in their applications using REST APIs

• DB2 DBAs can create and deploy a new DB2 REST service using the provided Data Studio tooling in a matter of

minutes

• A DB2 REST service consists of a single SQL statement, such as a SELECT, INSERT, UPDATE, CALL, etc.

• Mobile application programmers can easily “Discover” and immediately use available DB2 REST services. They do

NOT need to have any DB2 experience, or know how the service is implemented in order to use it.

• Input parameters for the SQL statement execution are provided in the REST Request message body, in JSON

format

• Output parameters and result sets are returned in the REST response body, also in JSON format




IBM.

DB2 Adapter for z/OS Connect V1 Overview

• DB2 Adapter for z/OS Connect is an integrated solution that enables developers to make existing DB2

assets – SQL and Stored Procedures – available in today’s growing mobile and cloud application

ecosystem via REST API

• Consist of 3 components

• WLP – WebSphere Liberty Profile with z/OS Connect license (Liberty 8.5.5.5*)

• DB2 Adapter for z/OS Connect (NOTE – ordering the DB2 Adapter will automatically include WLP, so

do not order or install separately)

• Data Studio Client 4.1.2

• DB2 Adapter for z/OS Connect ships via DB2 Accessories Suite for z/OS V3 R3.

• SMP/E Install

• Support DB2 10 for z/OS or later

• Some WLP skill preferred for install and configure

*APIM Discovery Support




IBM.

DB2 Adapter for z/OS Connect

• z/OS Connect address space is coupled with a single DB2 system

• REST API

• JSON request and response

DB2

z/OS Connect

andDB2 Adapter

JSON to/from SQL/CALLVia JCC

Type2 or Type4

WAS Liberty z/OS

RESTful

RESTful

RESTful

Data transformation /

routing

Mobile

/APIMSecurity / Auditing /

Metering

CloudOEJavaScript

CloudOE

JavaSQL

Stored

Procedure




IBM.

Security of DB2 Adapter for z/OS Connect

• Leverages the security strengths of DB2 and z/OS Connect

• DB2 Adapter service access control by z/OS Connect

• Administrator query services, perform operational tasks on services and invoke them

• Operator perform tasks on services, but cannot invoke them

• Invoker invoke the services, but do not have authority over them




IBM.

DB2 Adapter for z/OS Connect Security models and options

• DB2 Adapter for z/OS Connect leverages the security strengths of DB2 and z/OS Connect to provide a complete security solution that enables you to authenticate, authorize, and audit the use of all its services.

• z/OS Connect security

• z/OS Connect Authentication - A service invoker is always authenticated by z/OS Connect. This initial authentication can be setup to use a basic userid/password list configuration, or more likely will be configured to perform the authentication using SAF.

• z/OS Connect Authorization Check – Authorization checks can be configured at both the server and individual service level. z/OS Connect provides the following authorization roles:

• Administrator = query services, perform operational tasks on services and invoke them

• Operator = perform tasks on services (eg. Start/Stop), but cannot invoke them

• Invoker = invoke the services, but do not have authority over them

• DB2 Security

• Each DB2 Adapter for z/OS Connect Service can be configured to access DB2 and execute the SQL statement using:

• Service Owner : Deployer of Service using Data Studio Tooling

• Service Invoker: Caller of Service using z/OS Adapter Invoker Role

• DB2 Adapter Administrator ID: User ID specified in the DB2 Adapter Data Source

• Support for RACF PassTickets and DB2 Trusted Context




IBM.

REST API Develop a DB2 Adapter service using Data Studio Client

z/OS Connect address space is coupled with a single

DB2 system (stand alone or Data Sharing group)*

DB2

z/OS Connectand

DB2 Adapter JSON to/from SQL/CALL

Via JCCType2 or Type4

WAS Liberty z/OS

RESTful

Data transformation / routing

Security / Auditing / Metering

CloudOE

JavaSQL

Stored ProcedureDynamic

Deploy

* Single DB2 Catalog




IBM.

Data Studio Tooling for z/OS Connect – End to End Development

Database SQL Operations

UPDATE MY.EMPLOYEE

SET FIRSTNAME = :FIRSTNAME

WHERE EMPNO = :EMPNO

SELECT *

FROM MY.EMPLOYEE

WHERE EMPNO = ?

CALL DEPTS.BONUS_INCREASE

(:factor,

:maxSumForDept,

:deptsWithoutNewBonuses,

:countDeptsViewed,

:countDeptsBonusChanged,

:errorMsg)

Data Web Servicesof Data Studio

(later planned in RDz)

1-ClickDeploy or

UnDeploy to Remote

zOS ConnectServer

DB2

z/OS

Connect

Server

DB2 Adapter Artifacts

z/OS Connect on LPAR




IBM.

Data Studio User Interface

1. Define z/OS Connect server together with Database connection

Database connection setup is same as before New optional z/OS Connect server setup with SSL support




IBM.

Data Studio User Interface, continue

2. Define a new service by right click on Web Services folder




IBM.

Data Studio User Interface, continue

3. Drag‘n drop sql statements

including call statements into

the Web Service

4. Right click to Deploy in

z/OS Connect Server

Service definitions are deployed in z/OS Connect – ready to use




IBM.

REST API - Working with DB2 Adapter services

Discovering available DB2 Adapter servicesGET https://<host>:<port>/zosConnect/services

Retrieving the details of a DB2 Adapter serviceGET https://<host>:<port>/zosConnect/services/<service_name>

● Service Name, Description, Provider, URLs, Status, Request Schema, and Response Schema




IBM.

REST API - Working with DB2 Adapter services (continued)

Starting a DB2 Adapter service

POST https://<host>:<port>/zosConnect/services/<service_name>?action=start

Stopping a DB2 Adapter service

POST https://<host>:<port>/zosConnect/services/<service_name>?action=stop

Invoking a DB2 Adapter service

POST https://<host>:<port>/zosConnect/services/<service_name>?action=invoke

Example using RESTClient on Firefox




IBM. © 2016, IBM Corporation

Statements of Direction for DB2 for z/OS

IBM makes the following statements of general direction:

• At the time of this presentation, z/OS Connect EE V2 does NOT yet have DB2 for

z/OS support.

• IBM intends to offer IBM DB2 for z/OS Version 11, or later, with support for the

external interface delivered in z/OS Connect EE V2.0, and DB2 RESTful API support

that is fully integrated into the DB2 for z/OS Distributed Data Facility. IBM's statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM's sole discretion. Information regarding potential future

products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future

products is not a commitment, promise, or legal obligation to deliver any material, code, or functionality. Information about potential future products may not be incorporated into

any contract. The development, release, and timing of any future features or functionality described for our products remain at our sole discretion.




IBM.

Future direction - Native DB2 REST Service

Liberty Profile for z/OS

z/OS Connect

Au

then

tica

tio

n

Au

thori

za

tio

n

En

cry

ptio

n

Service Discovery

Data

Transformation

Service

Invocation

Access Control

(SAF)

Tracing and

Auditing (SMF)

IMS

DB2

CICS

Batch

Data

Studi

o

RESTfulJSON

RESTfulJSON

Outbound

Rest Call

Forwarding




IBM.

• Reduce z/OS peak MSUs attributable to mobile workloads – up to 60%

• No Infrastructure changes required (such as separate LPARs)

• Requires tagging and tracking z/OS CPU seconds from mobile workloads.

Other z/OS

workloads

CPU

Mobile

Adjusted z/OS

peak utilization

Eligible for

reduction

Other

workloads

Mobile

workloads

CPU

Current z/OS

peak utilization

Large bank increasedmobile transaction volumes

by 40% in two years

Cumulative

Mobile

Mobile Workload Pricing for z/OS

41




IBM.

Cloud Workload Pricing for z/OS (Recent Addition)

Cloud Workload Pricing

Cloud transactions processed in a z/OS subsystem like CICS or DB2 now qualify

for a 60% MSU reduction … Extending the Mobile pricing concept

Cloud workload

A new application originating from a public cloud that connects to a mainframe

transactional service and/or data source via a REST or SOAP web service

Benefits

Improves mainframe economics as a System of Record in a hybrid cloud

environment

Example

A cloud application developed and running in Bluemix on the Softlayer cloud,

connects to a CICS service (via z/OS Connect or any other method) behind a

customer’s firewall to access and potentially update account information

The CPU time processed by CICS to handle these Bluexmix transactions qualifies

for the pricing benefit (i.e. 60% MSU reduction)

Note, a web service can be invoked from any public cloud environment (Bluemix,

Amazon AWS, MS Azure, etc.) and customers can expose z services to access

their mainframes in multiple ways




IBM.

Reference Info

• IBM DB2 Adapter for z/OS Connect Installation and User's Guide (SC27-6769-00)

• V11:

http://www.ibm.com/support/knowledgecenter/SSEPEK_11.0.0/com.ibm.db2z.doc.adapter/src/tpc/adapter_installovervie

w.dita

• V10:

• http://www.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/com.ibm.db2z.doc.adapter/src/tpc/adapter_installovervie

w.dita

• WLP Knowledge Center Links:

• WLP Config elements –

https://www.ibm.com/support/knowledgecenter/SSEQTP_8.5.5/com.ibm.websphere.wlp.doc/autodita/rwlp_metatype_4ic.html?cp=SSE

QTP_8.5.5%2F1-0-2-1-0

• WLP White Paper –

http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP102110

• Z/OS Connect Service element configuration from Knowledge Center –

http://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.wlp.nd.multiplatform.doc/ae/twlp_zconnect_srvcdef

.html?cp=SSAW57_8.5.5%2F3-3-11-0-2-7-4&lang=en

http://www-01.ibm.com/support/knowledgecenter/SSEPEK_11.0.0/com.ibm.db2z.doc.adapter/src/tpc/adapter_installoverview.dita

http://www-01.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/com.ibm.db2z.doc.adapter/src/tpc/adapter_installoverview.dita

https://www-01.ibm.com/support/knowledgecenter/SSEQTP_8.5.5/com.ibm.websphere.wlp.doc/autodita/rwlp_metatype_4ic.html?cp=SSEQTP_8.5.5/1-0-2-1-0

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP102110

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP102110

http://www-01.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.wlp.nd.multiplatform.doc/ae/twlp_zconnect_srvcdef.html?cp=SSAW57_8.5.5/3-3-11-0-2-7-4&lang=en




IBM.

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evaluations by 5:30pm Wednesday

to be eligible for drawings!

*Winners will be notified Thursday morning. Prizes must be picked up at

registration desk, during operating hours, by the conclusion of the event.

1 2 3 4




IBM.

Continue growing your IBM skills

ibm.com/training

provides a comprehensive

portfolio of skills and career

accelerators that are designed

to meet all your training needs.

If you can’t find the training that is right for you with our

Global Training Providers, we can help.

Contact IBM Training at [email protected]

Global Skills Initiative

mailto:[email protected]

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Connecting DB2 Applications, including Mobile and …Mobile without the DB2 Adapter for z/OS Connect...

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