Answer Posted / ankur akash

'Database buffer cache' is a part of SGA [Shared Global
Area] architecture.

The default parameter is db_buffer_Cache
Starting from Oracle 10G DB, to determine database buffer
size, the parameter is, db_nk_buffer_Cache
where n=2,4,8,16,32 [8k is the default one].

Database buffer cache is a virtual passage where data is
inserted from 'Most recently used' and will move forward in
the queue towards the 'least recently used' end.

The buffers are named as empty, pinned and dirty.

Once the data gets committed 'DBWn' will write the data from
the database buffer cache to the file on disk.

Can a Tablespace hold objects from different Schemes in Oracle?

994

---

What is an Oracle Rollback Segment?

1075

---

What is an Oracle Data Dictionary?

1059

---

What is the use of Oracle Control File?

1029

---

What is an Oracle Data Segment?

1000

---

What are Oracle Schema Objects?

1064

---

What is an Integrity Constrains in Oracle?

1152

---

What is an oracle database schema?

1088

---

Teradata: How can we know the indexed column in a table?

1857

---

What are the consideration at tehe migration of Oracle 9i to 10G.

3020

---

What is an Oracle SYSTEM tablespace and when is it Created?

1080

---

How to define Data Block size in Oracle?

1082

---

What is the function of Redo Log in Oracle?

1151

---

What are the uses of Oracle Rollback Segment?

1090

---

Can a View based on another View in Oracle?

993

---