Oracle 8
i
Application Developer's Guide - Large Objects (LOBs)
Release 8.1.5
A68004-01
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Product
Contents
Index
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
B
BFILE datatype, 1-3
BFILENAME(), 5-5
BFILEs, 1-2
initializing, 5-5
maximum number of open, 1-8,
5-136
multi-threaded server (MTS), 5-10
BLOB datatype, 1-2
buffers
LOBs, 2-14
C
CACHE / NOCACHE, 3-10
caches
object cache, 2-14
CHUNK, 3-11
CLOB datatype, 1-2
NCLOBs, 1-2
copy semantics for internal LOBs, 3-28
copying LOBs, 2-12
D
DBMS_LOB package
multi-threaded server (MTS), 5-10
deleting internal LOBs, 2-14
deleting LOBs, 2-14
directories
catalog views, 5-9
guidelines for usage, 5-9
ownership and privileges, 5-7
DIRECTORY name specification, 5-7
directory objects, 5-5
E
examples
LOB buffering, 2-21
read consistent locators, 2-3
repercussions of mixing SQL DML with DBMS_LOB, 2-6
updated LOB locators, 2-8
updating a LOB with a PL/SQL variable, 2-10
external callout, 2-20
external LOBs (BFILEs), 1-2
F
flushing the LOB's buffer, 2-15
FOR UPDATE clause
LOBs, 1-49,
2-2
L
LBS
SeeLOB Buffering Subsystem
LOB Buffering System (LBS)
LOB locators cannot span transactions, 1-49
LOBS
external (BFILEs), 1-2
LOBs
accessing through a locator, 1-49
buffering
caveats, 2-15
pages can be aged out, 2-19
buffering operations, 2-17
buffering subsystem, 2-14
deleting, 2-14
flushing, 2-15
in partitioned tables, 6-2
in the object cache, 2-14
inline storage, 1-47
internal LOBs
CACHE / NOCACHE, 3-10
CHUNK, 3-11
deleting, 2-14
ENABLE | DISABLE STORAGE IN ROW, 3-12
initializing, 5-93
locators, 1-47
locking before updating, 3-146,
3-182,
3-192,
3-201,
3-217,
3-227
LOGGING / NOLOGGING, 3-10
PCTVERSION, 3-9
setting to empty, 3-8
tablespace and LOB index, 3-9
tablespace and storage characteristics, 3-8
LOB locators, 2-2
locators, 1-47
object cache, 2-14
performance, best practices, 2-24
performing SELECT on, 1-49
piecewise operations, 2-5
read consistent locators, 2-2
setting to contain a locator, 1-47
setting to NULL, 3-7
tables
adding partitions, 6-6
creating, 6-3
creating indexes, 6-5
exchanging partitions, 6-5
merging partitions, 6-6
moving partitions, 6-6
partitioning, 6-3
splitting partitions, 6-6
typical uses, 1-39
updated LOB locators, 2-5
value, 1-47
varying-width character data, 2-25
locators, 1-47
accessing a LOB through, 1-49
cannot span transactions, 1-49
multiple, 2-2
read consistent, 2-2,
2-3,
2-9,
2-12,
2-19,
2-21,
2-22,
2-24
read consistent locators, 2-2
selecting, 1-49
setting column / attribute to contain, 1-47
updated, 2-2,
2-5,
2-10,
2-12,
2-19
LOGGING / NOLOGGING, 3-10
M
multi-threaded server (MTS)
BFILEs, 5-10
N
national language support
NCLOBs, 1-2
NCLOB datatype, 1-2
O
object cache, 2-14
LOBs, 2-14
P
PCTVERSION, 3-9
R
read consistency
LOBs, 2-2
read consistent locators, 2-2,
2-3,
2-9,
2-12,
2-19,
2-21,
2-22,
2-24
reference semantics for BFILEs, 5-6
roundtrips to the server, avoiding, 2-15,
2-21
S
SELECT command
FOR UPDATE, 1-49
read consistency, 2-2
semantics
copy-based for internal LOBs, 3-28
reference based for BFILEs, 5-6
SESSION_MAX_OPEN_FILES parameter, 1-8,
5-52,
5-67
setting internal LOBs to empty, 3-8
setting LOBs to NULL, 3-7
SQL DDL
BFILE security, 5-8
SQL DML
BFILE security, 5-8
T
transactions
external LOBs do not participate, 1-3
internal LOBs participate fully, 1-2
LOB locators cannot span, 1-49
migrating from, 2-20
U
updated locators, 2-2,
2-5,
2-10,
2-12,
2-19
V
value of LOBs, 1-47
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