Review the Oracle datatypes that are not supported by Replication Agent.
Oracle-supplied datatypes:
“Any” Types (SYS.ANYTYPE, SYS.ANYDATASET), except for SYS.ANYDATA.
MLSLABEL
Spatial Types (MDSYS.SDO_GEOMETRY, SDO_TOPO_GEOMETRY, SDO_GEORASTER)
Media Types (ORDSYS.ORDAudio, ORDSYS.ORDImage, ORDSYS.ORDImageSignature, ORDSYS.ORDVideo, ORDSYS.ORDDoc, SI_StillImage, SI_Color, SI_AverageColor, SI_ColorHistogram, SI_PositionalColor, SI_Texture, SI_FeatureList)
Datatypes used with Oracle Expression Filter
ANYDATA, if it is being replicated to a non-ANYDATA column or if the data exceeds 16KB, which is the size constraint of the Replication Server OPAQUE datatype.
BFILE, UROWID, or REF data stored in an ANYDATA column
BLOB or object user-defined datatype data being replicated to a replicate database other than Oracle or Adaptive Server® Enterprise (ASE). When replicating to Oracle, use ExpressConnect for Oracle since data of these types is not supported by Enterprise Connect™ Data Access (ECDA) for Oracle.
REF
UROWID
User-defined datatypes containing LOB data
User-defined datatypes defined as NOT FINAL
Partial updates to Oracle LOBs are not supported.
Virtual columns – Replication Agent supports the replication of tables containing computed (or virtual) columns in Oracle 11g. However, the replication of individual computed columns is not supported. You can mark tables with virtual columns for replication using the force option, but the virtual columns are not replicated.
These user-defined object types and structures are not supported: