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Exam Code: C1000-122
Exam Name: Db2 12 for z/OS DBA Fundamentals
Number of questions: 63
Number of questions to pass: 44
Time allowed: 90 minutes
Status: Live

Section 1: Planning (12%)

- Db2 12 system requirements and supported z/OS levels
- Processor requirements (z196 and later, z13, z14, z15, z16)
- Memory requirements and buffer pool planning
- Installation methods: SMP/E, DB2 Installation CLIST, new function mode (NFM), catalog migration
- Migration from Db2 11 or earlier versions, fallback and fallback SPE
- Enabling new function mode (ENFM), catalog changes in V12
- DSNZPARM (ZPARM) parameters relevant to installation
- Subsystem parameters (DSNTIJUZ, DSN6SYSP, DSN6ARVP, DSN6LOGP, DSN6SPRM)
- Buffer pool sizing and attributes (BP0 to BP49, BP32K, page sizes 4K, 8K, 16K, 32K)
- Use of zIIP processors for DB2 workload offloading
- High availability and disaster recovery planning (Data Sharing, HADR, GDPS)
- Distributed Data Facility (DDF) planning and DRDA
- Storage requirements and use of SMS, extended addressability
- Function levels in Db2 12 (V12R1M500, M501, M502, M505, etc.)
- DSNZPARM
- IRLM
- EDM pool
- RDS pool
- DDF
- ZPARM
- function level
- CATMAINT
- ENFM
- fallback SPE
- zIIP
- SMS
- extended addressability
- data sharing group
- coupling facility


Section 2: Working with SQL and XML (15%)

- Data types: CHAR, VARCHAR, INTEGER, DECIMAL, DATE, TIME, TIMESTAMP, CLOB, BLOB, XML
- Basic SQL: SELECT, INSERT, UPDATE, DELETE, MERGE
- Joins: inner join, left/right/full outer join, cross join
- Subqueries: scalar, correlated, non-correlated, EXISTS, NOT EXISTS
- Common table expressions (CTE), recursive CTE
- SQL functions: scalar (COALESCE, NULLIF, CASE), aggregate (SUM, AVG, COUNT, MIN, MAX), string functions
- Grouping and HAVING clause
- UNION, UNION ALL, INTERSECT, EXCEPT
- XML data type, XML columns, XML storage (XML tablespaces)
- XML parsing and validation (XMLPARSE, XMLVALIDATE)
- Querying XML with SQL/XML functions: XMLQUERY, XMLEXISTS, XMLTABLE
- XML indexes and XML schema registration (XSR)
- Dynamic vs static SQL, parameter markers, PREPARE, EXECUTE IMMEDIATE
- predicate
- sargable predicate
- stage 1 predicate
- stage 2 predicate
- indexable predicate
- XMLTABLE
- XMLEXISTS
- XMLQUERY
- XMLPARSE
- XSR (XML Schema Repository)
- pureXML

Section 3: Security (12%)

- Authentication methods: z/OS (RACF, ACF2, Top Secret), LDAP, Kerberos
- Authorization IDs: primary, secondary, role, trusted context
- DB2 privileges: SYSADM, SYSCTRL, SYSOPR, DBADM, DBCTRL, DBMAINT
- Object privileges: SELECT, INSERT, UPDATE, DELETE, ALTER, INDEX, TRIGGER, EXECUTE
- Administrative authorities: PACKADM, SQLADM, DATAACCESS, ACCESSCTRL
- Row and column access control (RCAC): row permissions, column masks
- Multilevel security (MLS) and security labels
- Audit policies and audit trace
- Trusted context and role-based access
- Encryption: data at rest (z/OS dataset encryption), in-flight (DRDA encryption), application-level encryption
- SECADM authority
- RACF
- SYSADM
- DBADM
- DATAACCESS
- ACCESSCTRL
- RCAC
- row permission
- column mask
- trusted context
- role
- SECADM
- audit policy
- multilevel security

Section 4: Operations (15%)

- Starting and stopping DB2: START DB2, STOP DB2, STOP DB2 MODE(FORCE)
- DISPLAY commands: DISPLAY DATABASE, DISPLAY THREAD, DISPLAY UTILITY, DISPLAY DDF
- DB2 commands: -START RLIMIT, -TERM UTILITY, -ALTER BUFFERPOOL, -REFRESH DB2
- Utility execution: RUNSTATS, REORG, COPY, RECOVER, LOAD, UNLOAD, REPAIR
- Online schema changes: ALTER TABLE, ALTER INDEX, pending changes
- Backup and recovery: image copies (full, incremental), QUIESCE, BACKUP SYSTEM, RESTORE SYSTEM
- Log management: active log, archive log, BSDS, log preformatting
- Monitoring: -DISPLAY LOG, -DISPLAY BUFFERPOOL, -ACCESS DATABASE
- BSDS
- active log
- archive log
- image copy
- QUIESCE
- online REORG
- pending definition
- materialization
- TERM UTILITY
- DISPLAY THREAD
- CANCEL THREAD

Section 5: Data Concurrency (14%)

- Locking: lock escalation, lock avoidance, lock modes (IS, IX, S, U, X)
- Isolation levels: CS (cursor stability), RS (read stability), RR (repeatable read), UR (uncommitted read)
- Claim and drain process
- Deadlock and timeout detection (IRLM parameters)
- Bind options: ACQUIRE(USE/ALLOCATE), RELEASE(COMMIT/DEALLOCATE), ISOLATION(CS/RS/RR/UR)
- Currentdata option and blocking
- Lock avoidance with CS and lock skipping
- LOB and XML locking behavior
- lock escalation
- lock avoidance
- claim
- drain
- deadlock
- timeout
- IRLM
- isolation level
- cursor stability
- read stability
- uncommitted read
- CURRENTDATA

Section 6: Application Design (15%)

- Bind options and package management
- REOPT(ONCE/ALWAYS/NEVER), PLANMGMT, APREUSE
- Static vs dynamic SQL performance considerations
- Use of global temporary tables (DGTT), declared temporary tables
- Sequence objects and identity columns
- Triggers: BEFORE, AFTER, INSTEAD OF
- Stored procedures: native SQL procedures, external procedures
- Versioning of packages (APPLCOMPAT)
- Concentration of packages and thread reuse
- High performance DBATs in DDF
- package
- collection
- version
- APPLCOMPAT
- REOPT
- PLANMGMT
- APREUSE
- DGTT
- sequence
- trigger
- native SQL procedure
- high performance DBAT

Section 7: Working with Database Objects (15%)

- Tablespaces: partitioned, universal (PBG, PBR), segmented, LOB tablespaces
- Indexes: unique, non-unique, partitioning index, index on expression, DPSI
- Index page sizes and compression
- Cloning tables and databases
- Temporal tables: system-period temporal, application-period temporal, bitemporal
- Views, materialized query tables (MQT), aliases
- Constraints: primary key, unique, foreign key, check constraint
- Storage groups (STOGROUP), volumes, VCAT vs SMS
- Altering objects: ALTER TABLESPACE, ALTER INDEX, deferred alters
- universal tablespace
- PBG
- PBR
- partition-by-growth
- partition-by-range
- DPSI
- expression-based index
- temporal table
- history table
- STOGROUP
- clone table
- pending alter
- immediate alter