Oracle 数据库管理认证一般分为三个级别：
OCA：Administrator Certified Associate
OCP：Administrator Certified Professional
OCM：Administrator Certified Master
每个级别中分不同版本的产品：
在考：12c、2019（对应oracle19c）
已停考：9i、10g、11g
考取对应考试科目，即可获取对应级别、对应产品的证书。因证书中含有产品信息，所以取得证书一直有效，不存在一段时间后需要重启考试激活的问题。
每个级别需要依次取得。
例如：即要想获得OCP证书，就要先获取对应的OCA证书。
当你获取某个级别的证书后，可以通过考试，继续获取同产品的更高级别的考试。
例如：你已经获得12c的ocp证书，你可以继续通过考试，便可获取12c的ocm证书。
当你获取了某个产品的某个级别的证书后，你可通过产品升级考试，获取下一个产品的同等级证书。
例如，你已经获得12c的ocp证书，你仅需要通过考一门升级考试，便可获取2019的ocp证书。
上机考试费用每门一般在2000元左右。
通过最新Oracle官网信息，Oracle Database Administration的认证路径如下：
（截止2021/4/22）
OCA：
12c Administrator Certified Associate
1、Oracle Database 12c SQL 1Z0-071
2、Oracle Database 12c Administration 1Z0-062
OCP：
Administration 2019 Certified Professional
1、Oracle Database Administration I 1Z0-082
2、Oracle Database Administration II 1Z0-083
3、Complete one of these courses.
19c: Administration Workshop
19c: Backup and Recovery Workshop
19c: Data Guard Administration Workshop
19c: Multitenant Architecture
19c: New Features for Administrators
19c: Performance Management and Tuning
19c: SQL Tuning Workshop
19c: Clusterware Administration Workshop
19c: RAC Administration Workshop
19c: ASM Administration Workshop
19c: Security
19c: Fundamentals for Oracle
Administration 2019 Certified Professional
(Upgrade from 10g, 11g, 12c, 12cR2 OCP)
1、Oracle Database Administration II 1Z0-083
12c Administrator Certified Professional
1、12c Administrator Certified Associate
2、12c: Advanced Administration 1Z0-063
3、Complete one of these courses.
12c: Admin, Install and Upgrade Accelerated
12c: Administration Workshop
12c: Backup and Recovery Workshop
12c: Data Guard Administration
12c: RAC and Data Guard Integration Workshop
12c: High Availability New Features
12c: Install and Upgrade Workshop
12c: Managing Multitenant Architecture
12c: New Features for Administrators
12c: Performance Management and Tuning
12c : Fundamentals for Oracle
12c: Clusterware & RAC Admin Accelerated
12c: ASM Administrat
12c: Clusterware Administration
12c: RAC Administration
12c: Security
12c Administrator Certified Professional
upgrade from 7.3, 8, 8i, 9i, 10g, 11g OCP
1、Upgrade to Oracle Database 12c 1Z0-060
OCM：
12c Administrator Certified Master
1、12c Certified Master Exam 12cOCM
2、Complete two of these courses
12c: Data Guard Administration
12c: Deploy, Patch and Upgrade Workshop
12c: High Availability New Features
12c: Managing Multitenant Architecture
12c: New Features for Administrators
12c: Clusterware Administration
12c: RAC Administration
12c: Security
12c: Use XML DB
12c: Performance Management and Tuning
12c: Advanced PL/SQL
12c: Administration Workshop
12c: Backup and Recovery Workshop
12c: ASM Administration
12c: Install and Upgrade Workshop
12c: Admin, Install and Upgrade Accelerated
12c: RAC and Data Guard Integration Workshop
12c: Clusterware & RAC Admin Accelerated
12c: OCM Exam Preparation Workshop
12c Administrator Certified Master
(upgrade from 9i OCM)
1、12c Certified Master Upgrade Exam 12COCMU
2、Complete one of these exams：
1Z0-048 Database 10g R2: RAC
1Z0-058 Real Application Clusters 11g
1Z0-068 12c: RAC and Grid Infrastructure
12c Administrator Certified Master
(upgrade from 10g OCM & 11g OCM)
1、12c Certified Master Upgrade Exam 12COCMU
目前的证书均为电子证书，可通过Oracle官网进行下载，或发送给指定信箱。
