Oracle需要学习的内容（Programmer方向和DBA方向）

最新推荐文章于 2025-09-03 06:47:09 发布

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最新推荐文章于 2025-09-03 06:47:09 发布

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分类专栏： 1. Oracle基础知识文章标签： oracle database file sql basic session

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如果想成为真正的Oracle专家，最好把Programmer和DBA的东西都学好，学透彻。

单从知识本身大概需要1年学习期，但是需要2年左右的具体实践，才能真正融会贯通，培养一个真正的专家至少3年。在学习Oracle的时候一定要有计划，有耐心，多实践。

Programmer and DBA Basic knowledge (2 weeks):

Programmer (2 months,but needs at least 1 year practice to be an expert):

Complex SQL commands, mainly the complex select statement, joins, sub-query, …
Oracle build-in functions, such as substr, trim, sysdate, to_char, to_date, .nvl, decode, …
Oracle PL/SQL (block, function, procedure, package, trigger, type)
Oracle build-in packages, such as dbms_output, dbms_stat, ….

DBA:

1. Foundation (Level 1) (1 months study, but needs at least 1 year practice to be an expert):

2. Entrance (Level 2) (2 months, but at least 1 year practice)

Maintain Oracle Schema/User/Role/Privilege/Profile
Maintain/Monitor objects inside the schema (table, column, constraint, index, view, sequence, synonym, table partition, index partition, cluster), and know how to query them in the user_*, all_*, dba_* dictionary.

3. Daily and Key Tasks (Level 3) (3 months study, but at least 2 years practice)

Monitor Oracle Instance by v$ views. Such as session info, client info, process, transaction, sql/sql_plan, waiting events, lock, latch, session statistic, system statistic, …
Monitor Oracle Instance by other tools or methods, such as sql_trace, tkprof, statspack, awr, ash, …
Performance tuning (Understand how the optimizer works, Read explain plan, use oracle hint, analyze, dbms_stats, rewrite SQL, rewrite PL/SQL, Refactor design, Add hardware, Change configuation, SGA, PGA, parallel run,…)
Database backup and recovery. (RMAN, imp/exp, sql loader…)
Database error handling and trouble shooting.

4. High Level Topic (Level 4) ( 3 months study, but at least 1 year practice)