< Oracle Database Administration

This lesson introduces Oracle database architecture.

Objectives and Skills

Objectives and skills for the database architecture portion of Oracle Database Administration I certification include:[1]

  • Exploring the Oracle Database Architecture
    • Explain the Memory Structures
    • Describe the Process Structures
    • Overview of Storage Structures

Readings

  1. Oracle: Database 2-Day DBA Managing the Oracle Instance

Multimedia

  1. YouTube: General Oracle Architecture
  2. YouTube: Processes & Memory
  3. YouTube: Datafiles & Tablespaces pt 1

Activities

  1. Complete the tutorial Oracle: Managing the Oracle Instance.
  2. Identify instance configuration.
    1. Review Oracle: Introduction to Oracle Database Architecture.
    2. Using either SQL*PLUS or SQL Developer, connect to Oracle Database as either SYSTEM or SYS AS SYSDBA.
    3. Use the following query to identify clustered (YES) or stand-alone mode:
      SELECT PARALLEL FROM V$INSTANCE;
    4. Use the following query to identify data protection level:
      SELECT PROTECTION_LEVEL FROM V$DATABASE;
    5. Use the following query to identify Streams configuration:
      SELECT * FROM DBA_STREAMS_ADMINISTRATOR;
  3. Identify memory structures.
    1. Review Oracle: Memory Architecture.
    2. Use the following query to identify System Global Area (SGA) memory structures and usage:
      SELECT COMPONENT, CURRENT_SIZE, MIN_SIZE, MAX_SIZE FROM V$SGA_DYNAMIC_COMPONENTS;
    3. Use the following query to identify Program Global Area (PGA) memory usage:
      SELECT * FROM V$PGASTAT;
  4. Identify process structures.
    1. Review Oracle: Process Architecture.
    2. Use the following query to identify current sessions:
      SELECT PROGRAM FROM V$SESSION;
    3. Use the following query to identify current processes:
      SELECT PROGRAM FROM V$PROCESS;
  5. Identify storage structures.
    1. Review Oracle: Tablespaces, Datafiles, and Control Files.
    2. Use the following query to identify user extents:
      SELECT * FROM DBA_EXTENTS WHERE TABLESPACE_NAME = 'USERS';
    3. Use the following query to identify data files:
      SELECT * FROM V$DATAFILE;
    4. Use the following query to identify table spaces:
      SELECT * FROM DBA_TABLESPACES;
    5. Use the following query to identify log files:
      SELECT * FROM V$LOGFILE
    6. Use the following query to identify the control file:
      SELECT * FROM V$CONTROLFILE;
    7. Use the following query to identify log information:
      SELECT * FROM V$LOG

See Also

References

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