Troubleshooting guide

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gateway – connectivity software that allows two or more computer systems with different
network architectures to communicate.
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inbound queue – a stable queue managed by Replication Server to spool messages
received from a Replication Agent. See also outbound queue and stable queue .
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interfaces file – a file containing information that Sybase Open Client and Open Server
™
applications need to establish connections to other Open Client and Open Server
applications. See also Open Client and Open Server .
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isql – an Interactive SQL client application that can connect and communicate with any
Sybase Open Server application, including Adaptive Server, Replication Agent, and
Replication Server. See also Open Client and Open Server .
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Java – an object-oriented programming language developed by Sun Microsystems. A
platform-independent, “write once, run anywhere” programming language.
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Java VM – the Java Virtual Machine. The Java VM (or JVM) is the part of the Java
Runtime Environment (JRE) that is responsible for interpreting Java byte codes. See also
Java and JRE .
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JDBC – an abbreviation for Java Database Connectivity. JDBC is the standard
communication protocol for connectivity between Java clients and data servers. See also
data server and Java .
•
JRE – an abbreviation for Java Runtime Environment. The JRE consists of the Java Virtual
Machine (Java VM or JVM), the Java Core Classes, and supporting files. The JRE must be
installed on a machine to run Java applications, such as Replication Agent. See also Java
VM .
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LAN – an abbreviation for “local area network,” a computer network located on the user
premises and covering a limited geographical area (usually a single site). Communication
within a local area network is not subject to external regulations; however, communication
across the LAN boundary can be subject to some form of regulation. Contrast with
WAN .
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latency – in transaction replication, the time it takes to replicate a transaction from a
primary database to a replicate database. Specifically, latency is the time elapsed between
committing an original transaction in the primary database and committing the replicated
transaction in the replicate database.
In disk replication, latency is the time elapsed between a disk write operation that changes
a block or page on a primary device and the disk write operation that changes the replicated
block or page on a replicate device.
See also transaction replication .
•
LOB – an abbreviation for large object, a large collection of data stored as a single entity in
a database.
•
Log Reader – an internal component of Replication Agent that interacts with the primary
database to capture transactions for replication. See also
Log Transfer Interface and Log
Transfer Manager .
CHAPTER 7: Glossary
Quick Start Guide for SAP HANA Database 107