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Oracle Distributed Systems
book

Oracle Distributed Systems

by Charles Dye
April 1999
Intermediate to advanced content levelIntermediate to advanced
552 pages
15h 39m
English
O'Reilly Media, Inc.
Content preview from Oracle Distributed Systems

Multiversion Interoperability

Oracle permits database links between any two RDBMS versions between Version 6 and Version 8, inclusive. However, there are restrictions, particularly when a Version 6 database is involved.

For database links going from an Oracle Version 6 database to an Oracle7 database:

  • Comparisons of fixed-length strings use blank-padded semantics in the Oracle7 database, even though Oracle Version 6 itself does not.

  • The link must be over a SQL*Net V2 connection if the Oracle Version is 7.3 or higher.

From an Oracle7 or Oracle8 database to an Oracle Version 6 database:

  • The database link must be over a SQL*Net V2 or Net8 connection.

  • The link can update only a single Version 6 database in a given statement.

  • The link cannot perform distributed transactions with an Oracle Version 6 database.

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Publisher Resources

ISBN: 1565924320Supplemental ContentCatalog PageErrata