Mirror Replication Agent for Oracle processes Oracle transactions and passes data to the primary Replication Server. In turn, the primary Replication Server uses the datatype formats specified in the replication definition to receive the data from Mirror Replication Agent for Oracle.
Table 2-2 describes the conversion of Oracle datatypes to Sybase datatypes.
Oracle datatype |
Oracle length/range |
Sybase datatype |
Sybase length/range |
Notes |
|---|---|---|---|---|
BINARY_FLOAT |
5 bytes, 32-bit single precision floating point number datatype |
rs_oracle_float |
4 or 8 bytes, depending on precision |
|
BINARY_DOUBLE |
9 bytes, 64-bit single precision floating point number datatype |
double |
8 bytes |
|
CHAR |
255 bytes |
char |
32K |
|
DATE |
8 bytes, fixed-length |
datetime or rs_oracle_datetime |
8 bytes |
Replication Server supports dates from January 1, 1753 to December 31, 9999. Oracle supports dates from January 1, 4712 BC to December 31, 9999 AD. If pdb_convert_datetime is true, the Sybase datatype used should be datetime. The value replicated is YYYYMMDD HH:MM:SS.sss. If pdb_convert_datetime is false, the Sybase datatype used should be rs_oracle_datetime. The format replicated is MM/DD/YYYY HH:MI:SS. |
TIMESTAMP(n) |
21-31 bytes, variable-length |
datetime or rs_oracle_timestamp9 |
8 bytes |
Replication Server supports dates from January 1, 1753 to December 31, 9999. Oracle supports dates from January 1, 4712 BC to December 31, 4712 AD. If pdb_convert_datetime is true, the Sybase datatype used should be datetime. If pdb_convert_datetime is false, the Sybase datatype used should be rs_oracle_timestamp9. |
TIMESTAMP(n) WITH [LOCAL] TIME ZONE |
Variable-length |
rs_oracle_timestamptz |
||
INTERVAL YEAR(n) TO MONTH |
Variable-length |
rs_oracle_interval |
||
INTERVAL DAY(n) TO SECOND(n) |
Variable-length |
rs_oracle_interval |
||
LONG |
2GB, variable-length character data |
text |
|
|
LONG RAW |
2GB, variable-length binary data |
image |
|
|
BLOB |
4GB, variable-length binary large object |
image |
2GB |
|
CLOB |
4GB, variable-length character large object |
text |
2GB |
|
NCHAR |
255 bytes, multi-byte characters |
unichar or char |
32K |
|
NCLOB |
4GB, variable-length multibyte character large object |
unitext or text |
2GB |
For Replication Server 15.0 and later versions, the NCLOB datatype maps to unitext. For earlier versions of Replication Server, the NCLOB datatype maps to image. |
NVARCHAR2 |
2000 bytes, variable-length, multibyte character data |
univarchar or varchar |
32K |
|
MLSLABEL |
5 bytes, variable-length binary OS label |
Not supported. |
||
NUMBER (p,s) |
21 bytes, variable-length numeric data |
float, int, real, number, decimal, or rs_oracle_decimal |
float is 4 or 8 bytes. int is 4 bytes. real is 4 bytes. number and decimal are 2 to 17 bytes. |
The float datatype can convert to scientific notation if the range is exceeded. Integers (int) are truncated if they exceed the Replication Server range of 2,147,483,647 to -2,147,483,648 or 1x10-130 to 9.99x1025. The number and decimal datatypes are truncated if they exceed the range of -1038 to 1038-1. Oracle precision ranges from 1 to 38 digits. Default precision is 18 digits. Oracle scale ranges from -84 to 127. Default scale is 0. |
RAW |
2000 bytes, variable-length binary data |
rs_oracle_binary |
32K |
|
ROWID |
6 bytes, binary data representing row addresses |
rs_oracle_rowid |
32K |
|
UDD object type |
Variable length character data |
rs_rs_char_raw |
32K |
|
VARCHAR2 |
2000 bytes, variable-length character data |
varchar |
32K |
