Controlled via DBMS_AUTO_INDEX , allowing DBAs to move from manual tuning to automatic, auditable optimizations. 2. SQL Quarantine
Test production SQL workloads against the new 19c environment to identify syntax changes or hidden bottlenecks before the final cutover.
These allow developers to encapsulate complex SQL logic into a macro that is expanded at compile-time, improving both code reusability and performance compared to traditional PL/SQL functions.
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| PDF Title | Essential For | |-----------|----------------| | SQL Language Reference | All SQL syntax, functions, operators (new JSON functions, WIDTH_BUCKET improvements). | | 2-Day DBA | Quick-start guide for new DBAs (updated for 19c multitenant). | | Performance Tuning Guide | Automated indexing, SQL plan management, real-time ADDM. | | Backup and Recovery User’s Guide | RMAN enhancements (duplicate from backup, cross-platform transport). | | Upgrade Guide | How to upgrade from 12c/18c to 19c (critical for long-term support). | | Security Guide | Transparent data encryption (TDE) tablespace encryption by default. |
Oracle Database 19c, the long-term support release of the Oracle Database 12c and 18c family, introduces significant automation and performance enhancements for both developers and administrators. For those seeking detailed technical documentation, the Oracle Database SQL Language Reference, 19c PDF serves as the definitive guide to new syntax and commands.
For any professional working with this database, having a PDF guide is not a luxury—it is a necessity. The "new" keyword implies documentation that covers these specific 19c additions, not generic SQL information from version 11g or 12c. Controlled via DBMS_AUTO_INDEX , allowing DBAs to move
If you are upgrading from 12c, focusing on and automatic indexing will yield the quickest performance gains.
While SQL monitoring existed in prior versions, Oracle 19c allows for for developers without requiring the Tuning Pack license for specific developer-centric views. It tracks the execution of long-running queries, providing a visual breakdown of where bottlenecks occur (e.g., CPU, I/O, or wait events) while the query is actively running. 4. Hybrid Partitioned Tables
Traditionally, statistics were gathered during maintenance windows. 19c gathers them "on-the-fly" during conventional DML operations (Insert/Update/Merge), ensuring the optimizer has up-to-date information for better execution plans. SQL Quarantine: These allow developers to encapsulate complex SQL logic
On the third night, she found it—a tattered, dog-eared printout from 2023: "Oracle SQL 19c New Features Guide (Unofficial Draft)."
: The primary reference for what's new in 19c, including SQL Quarantine, Memoptimized Rowstore, and performance enhancements.
Manual index management can be tedious and prone to errors. Oracle 19c introduces , which uses machine learning to automatically create, rebuild, and drop indexes based on application workload.
SELECT DBMS_AUTO_INDEX.CONFIGURATION_STATUS FROM DUAL;
