Glossary

A database that is replicated to a standby database in a warm standby application. See also warm standby application.

A predefined interface through which users or programs communicate with each other. Open Client™ and SAP® Open Server™ are examples of APIs that communicate in a client/server architecture. RCL, the Replication Command Language, is the SAP Replication Server API.

A replicated function, associated with a function replication definition, that SAP Replication Server delivers from a primary database to a subscribing replicate database. See also replicated function delivery, request function, and function replication definition.

A replication definition extension for tables or stored procedures that can be an element of a publication. Articles may or may not contain where clauses, which specify a subset of rows that the replicate database receives.

A method of replicating, from a source to a destination database, a stored procedure that is associated with a table replication definition.

A command that a client submits to SAP Replication Server where the client is not prevented from proceeding with other operations before the completion status is received. Many SAP Replication Server commands function as asynchronous commands within the replication system.

A materialization method that copies subscription data from a primary to a replicate database through the network in a single atomic operation, using a select operation with a holdlock. No changes to primary data are allowed until data transfer is complete. See also nonatomic materialization, bulk materialization and no materialization.

Autocorrection is a setting applied to replication definitions, using the set autocorrection command, to prevent failures caused by missing or duplicate rows in a copy of a replicated table. When autocorrection is enabled, SAP Replication Server converts each update or insert operation into a delete followed by an insert. Autocorrection should only be enabled for replication definitions whose subscriptions use nonatomic materialization.

A function-string class that does not inherit function strings from a parent class. See also function-string class.

A type of subscription that replicates rows based on bitmap comparisons. Create columns using the int datatype, and identify them as the rs_address datatype when you create a replication definition.

A feature that improves SAP Replication Server performance when replicating large batches of insert statements on the same table in SAP ASE 12.0 and later. SAP Replication Server implements bulk copy-in in Data Server Interface (DSI), the SAP Replication Server module responsible for sending transactions to replicate databases, using the Open Client™ Open Server™ Bulk-Library.

Bulk copy-in also improves the performance of subscription materialization. When dsi_bulk_copy is on, SAP Replication Server uses bulk copy-in to materialize the subscriptions if the number of insert commands in each transaction exceeds dsi_bulk_threshold.

A materialization method whereby subscription data in a replicate database is initialized outside of the replication system. You can use bulk materialization for subscriptions to table replication definitions or function replication definitions. For example, data may be transferred from a primary database using media such as magnetic tape, diskette, CDROM, or optical storage disk. Bulk materialization involves a series of commands, starting with define subscription. See also atomic materialization, nonatomic materialization, and no materialization.

A database system where data is managed by a single database management system at a centralized location.

See error class and function-string class.

A set of function-string classes, consisting of two or more levels of derived and parent classes, that derive from the same base class. See also function-string class.

A program connected to a server in a client/server architecture. It may be a frontend application program executed by a user or a utility program that executes as an extension of the system.

The SAP interface standard for programs executing in a client/server architecture.

The ability of multiple clients to share data or resources. Concurrency in a database management system depends upon the system protecting clients from conflicts that arise when data in use by one client is modified by another client.

A connection from an SAP Replication Server to a database. See also Data Server Interface (DSI) and logical connection.

Information required to establish a database connection.

A set of database dumps or transaction dumps that is synchronized across multiple sites by distributing an rs_dumpdb or rs_dumptran function through the replication system.

A set of related data tables and other objects that is organized and presented to serve a specific purpose.

Stored in both the database and the RSSD of the SAP Replication Server that manages the database, the database generation number is the first part of the origin queue ID (<qid>) of each log record. The origin queue ID ensures that the SAP Replication Server does not process duplicate records. During recovery operations, you may need to increment the database generation number so that SAP Replication Server does not ignore records submitted after the database is reloaded.

A description of a set of database objects—tables, transactions, functions, system stored procedures, and DDL—for which a subscription can be created.

You can also create table replication definitions and function replication definitions. See also table replication definition and function replication definition.

A server program, such as SAP ASE, that provides database management services to clients.

The set of commands in a query language, such as Transact-SQL, that describes data and their relationships in a database. DDL commands in Transact-SQL include those using the create, drop, and alter keywords.

The set of commands in a query language, such as Transact-SQL, that operates on data. DML commands in Transact-SQL include select, insert, update, and delete.

A server whose client interface conforms to the SAP Client/Server Interfaces and provides the functionality necessary to maintain the physical representation of a replicated table in a database. Data servers are usually database servers, but they can also be any data repository with the interface and functionality SAP Replication Server requires.

SAP Replication Server threads corresponding to a connection between an SAP Replication Server and a database. DSI threads submit transactions from the DSI outbound queue to a replicate data server. They consist of a scheduler thread and one or more executor threads. The scheduler thread groups the transactions by commit order and dispatches them to the executor threads. The executor threads map functions to function strings and execute the transactions in the replicate database. DSI threads use an Open Client connection to a database. See also outbound queue and connection.

A specific combination of a database management system (DBMS) product such as a relational or non-relational data server, a database residing in that DBMS, and the communications method used to access that DBMS from other parts of a replication system. See also database and data server.

A database client application characterized by ad hoc queries, reports, and calculations and few data update transactions.

The function string that is provided by default for the system provided classes rs_sqlserver_function_class and rs_default_function_class and classes that inherit function strings from these classes, either directly or indirectly. See also function string.

The optional process, when a subscription is dropped, whereby specific rows that are not used by other subscriptions are removed from the replicate database.

A function-string class that inherits function strings from a parent class. See also function-string class and parent class.

A route used to send messages directly from a source to a destination SAP Replication Server, with no intermediate SAP Replication Servers. See also indirect route and route.

See partition.

A database system where data is stored in multiple databases on a network.

An SAP Replication Server thread (DIST) that helps to determine the destination of each transaction in the inbound queue.

A message written by SAP ASE in a database transaction log when a dump is performed. In a warm standby application, when you are initializing the standby database with data from the active database, you can specify that SAP Replication Server use the dump marker to determine where in the transaction stream to begin applying transactions in the standby database. See also warm standby application.

The SAP SQL Anywhere database that stores SAP Replication Server system tables. You can choose whether to store SAP Replication Server system tables on the ERSSD or the SAP ASE RSSD. See also Replication Server System Database (RSSD).

An integrated set of software applications and connectivity tools that allow access to data within a heterogeneous database environment, such as a variety of LAN-based, non-ASE data sources, and mainframe data sources.

An SAP Replication Server response to a data server error. Possible SAP Replication Server error actions are ignore, warn, retry_log, log, retry_stop, and stop_replication. Error actions are assigned to specific data server errors.

A name for a collection of data server error actions that are used with a specified database.

A set of three SAP Replication Server system tables that holds information about transactions that failed on a data server. The transactions in the log must be resolved by a user or by an intelligent application. You can use the rs_helpexception stored procedure to query the exceptions log.

A set of libraries that can be used to provide direct communication between SAP Replication Server and an SAP HANA database.

A set of libraries that can be used to provide direct communication between SAP Replication Server and an Oracle database.

SAP Failover allows you to configure two version 12.0 and later SAP ASEs as companions. If the primary companion fails, that server’s devices, databases, and connections can be taken over by the secondary companion.

For more detailed information about how SAP Failover works in SAP ASE, refer to Using SAP Failover in a High Availability System, which is part of the SAP ASE documentation set.

The ability of a system to continue to operate correctly even though one or more of its component parts is malfunctioning.

An SAP Replication Server object that represents a data server operation such as insert, delete, select, or begin transaction. SAP Replication Server distributes such operations to other SAP Replication Servers as functions. Each function consists of a function name and a set of data parameters. In order to execute the function in a destination database, SAP Replication Server uses function strings to convert a function to a command or set of commands for a type of database. See also user-defined function, and replicated function delivery.

A description of a replicated function used in replicated function delivery. The function replication definition, maintained by SAP Replication Server, includes information about the parameters to be replicated and the location of the primary version of the affected data. See also replicated function delivery.

The range of a function’s effect. Functions have replication definition scope or function-string class scope. A function with replication definition scope is defined for a specific replication definition, and cannot be applied to other replication definitions. A function with function-string class scope is defined once for a function-string class and is available only within that class.

A string that SAP Replication Server uses to map a function and its parameters to a data server API. Function strings allow SAP Replication Server to support heterogeneous replication, in which the primary and replicate databases are different types, with different SQL extensions and different command features.

A named collection of function strings used with a specified database connection. Function-string classes include those provided with SAP Replication Server and those you have created. Function-string classes can share function string definitions through function-string inheritance. The three system-provided function-string classes are rs_sqlserver_function_class, rs_default_function_class, and rs_db2_function_class. See also base class, class tree, derived class, function-string inheritance, and parent class.

The ability to share function string definitions between classes, whereby a derived class inherits function strings from a parent class. See also derived class, function-string class, and parent class.

An identifier used in a function string to represent a value that is to be substituted at run time. Variables in function strings are enclosed in question marks (?). They represent column values, function parameters, system-defined variables, or user-defined variables.

A subscription to a function replication definition used in both applied and request function delivery.

Connectivity software that allows two or more computer systems with different network architectures to communicate.

See database generation number.

Multi-vendor data servers used together in a distributed database system.

An SAP Replication Server state in which all data definition language (DDL) commands, except admin and sysadmin commands, are rejected; all routes and connections are suspended; most service threads, such as Data Server Interface (DSI) and SAP Replication Server Interface (RSI), are suspended; and RSI and Replication Agent users are logged off and not allowed to log on. This is used during route upgrades, and may be turned on for an SAP Replication Server to debug problems.

An SAP® in-memory online transaction processing and online analytical processings solution.

The SAP in-memory database.

Very low downtime. Computer systems that provide HA usually provide 99.999% availability, or roughly five minutes unscheduled downtime per year.

Compilation of a group of insert, delete, and update operations to produce a net result and the subsequent bulk application of the net result to the replicate database.

A database application in which the standby database can be placed into service without interrupting client applications and without losing any transactions. See also warm standby application.

One SAP Replication Server in a replication system is the ID Server. In addition to performing the usual SAP Replication Server tasks, the ID Server assigns unique ID numbers to every SAP Replication Server and database in the replication system, and maintains version information for the replication system.

A stable queue used to spool messages from a Replication Agent to an SAP Replication Server.

A route used to send messages from a source to a destination SAP Replication Server, through one or more intermediate SAP Replication Servers. See also direct route and route.

A file containing entries that define network access information for server programs in an SAP client/server architecture. Server programs may include SAP ASE, gateways, SAP Replication Servers, and Replication Agents. The interfaces file entries enable clients and servers to connect to each other in a network.

The measure of the time it takes to distribute to a replicate database a data modification operation first applied in a primary database. The time includes Replication Agent processing, SAP Replication Server processing, and network overhead.

A system of computers and devices, such as printers and terminals, connected by cabling for the purpose of sharing data and devices.

The value stored in the rs_locater table of the SAP Replication Server RSSD that identifies the latest log transaction record received and acknowledged by the SAP Replication Server from each previous site during replication.

A database connection that SAP Replication Server maps to the connections for the active and standby databases in a warm standby application. See also connection and warm standby application.

The name that a user or a system component such as SAP Replication Server uses to log in to a data server, SAP Replication Server, or Replication Agent.

A subset of the Replication Command Language (RCL). A Replication Agent such as RepAgent uses LTL commands to submit to SAP Replication Server the information it retrieves from primary database transaction logs.

The Replication Agent program for SAP SQL Server. See also Replication Agent and RepAgent thread.

A data server login name that SAP Replication Server uses to maintain replicate data. In most applications, maintenance user transactions are not replicated.

The process of copying data specified by a subscription from a primary database to a replicate database, thereby initializing the replicate table. Replicate data can be transferred over a network, or, for subscriptions involving large amounts of data, loaded initially from media. See also atomic materialization, bulk materialization, no materialization, and nonatomic materialization.

A stable queue used to spool messages related to a subscription being materialized or dematerialized.

A row missing from a replicated copy of a table but present in the primary table.

A replication system containing SAP Replication Servers of different software versions that have different capabilities based on their different software versions and site versions. Mixed-version support is available only if the system version is 11.0.2 or greater.

For example, a replication system containing SAP Replication Servers version 11.5 or later and version 11.0.2 is a mixed-version system. A replication system containing SAP Replication Servers of releases earlier than release 11.0.2 is not a mixed-version system, because any newer SAP Replication Servers are restricted by the system version from using certain new features. See also site version and system version.

Columns in a replication definition exceeding 250, but limited to 1024. More columns are supported by SAP Replication Server version 12.5 and later.

Methodology for replicating database objects—tables, functions, transactions, system stored procedures, and data definition language (DDL) statements from the primary to the replicate database. In MultiSite Availability (MSA) setup, replication definitions are not required for tables without LOB columns while replication definitions with standby clauses are required for tables with LOB columns. See also database replication definition.

The scope within which an object name must be unique.

A materialization method that copies subscription data from a primary to a replicate database through the network in a single operation, without a holdlock. Changes to the primary table are allowed during data transfer, which may cause temporary inconsistencies between replicate and primary databases. Data is applied in increments of ten rows per transaction, which ensures that the replicate database transaction log does not fill. Nonatomic materialization is an optional method for the create subscription command. See also autocorrection, atomic materialization, no materialization, and bulk materialization.

Secure transmission of data across a network. SAP Replication Server supports third-party security mechanisms that provide user authentication, unified login, and secure message transmission between SAP Replication Servers.

A materialization method that lets you create a subscription when the subscription data already exists at the replicate site. Use the create subscription command with the without materialization clause. You can use this method to create subscriptions to table replication definitions. See also atomic materialization and bulk materialization.

A database client application characterized by frequent transactions involving data modification (inserts, deletes, and updates).

Formed by the Replication Agent, the qid uniquely identifies each log record passed to the SAP Replication Server. It includes the date and timestamp and the database generation number. See also database generation number.

A table row that is present in the replicate, but not in the primary database.

A stable queue used to spool messages. The DSI outbound queue spools messages to a replicate database. The RSI outbound queue spools messages to a replicate SAP Replication Server.

Configuring a database connection so that transactions are applied to a replicate data server using multiple Data Server Interface (DSI) threads operating in parallel, rather than a single DSI thread. See also connection and Data Server Interface (DSI).

An identifier representing a value that is provided when a procedure executes. Parameter names are prefixed with an @ character in function strings. When a procedure is called from a function string, SAP Replication Server passes the parameter values, unaltered, to the data server. See also searchable parameter.

A function-string class from which a derived class inherits function strings. See also function-string class and derived class.

A raw disk partition or operating system file that SAP Replication Server uses for stable queue storage. Only use operating system files in a test environment.

A connection from an SAP Replication Server to a database.

The definitive version of a set of data in a replication system. The primary data is maintained on a data server that is known to all of the SAP Replication Servers with subscriptions for the data.

Any database that contains data that is replicated to another database via the replication system.

A horizontal segment of a table that holds the primary version of a set of rows.

A set of table columns that uniquely identifies each row.

The location or facility at which primary data servers and primary databases are deployed to support normal business operations. Sometimes called the active site or main site. See error class and function-string class.

The user who starts an application. When using network-based security, SAP Replication Server logs in to remote servers as the principal user.

Allows user to configure a connection with a pre-defined set of properties relative to the server SAP Replication Server is connecting to.

A vertical slice of a table, representing a subset of the table’s columns.

A group of articles from the same primary database. A publication lets you collect replication definitions for related tables and/or stored procedures and then subscribe to them as a group. You collect replication definitions as articles in a publication at the source SAP Replication Server and subscribe to them with a publication subscription at the destination SAP Replication Server. See also article and publication subscription.

A subscription to a publication. See also article and publication.

The datatype of the column after the column-level translation (and before a class-level translation, if any) at the replicate data server. The published datatype must be either an SAP Replication Server base datatype or a UDD for the datatype in the target data server. If the published datatype is omitted from the replication definition, it defaults to the declared datatype.

In a database management system, a query is a request to retrieve data that meets a given set of criteria. The SQL database language includes the select command for queries.

A state in which log scanning has stopped and all scanned records have been propagated to their destinations in a replication system. Some Replication Agent and SAP Replication Server commands require that you first quiesce the replication system.

Object names that contain special characters such as spaces and nonalphanumeric characters, start with a character other than alphabet, or correspond to a reserved word and need to be enclosed in quote (single or double) characters to be parsed correctly.

High volume adaptive replication (HVAR) to an SAP® IQ database. Uses relevant commands and processes to apply HVAR changes to an SAP IQ replicate database. See high volume adaptive replication.

A request to execute a procedure that resides in a remote server. The server that executes the procedure could be an SAP ASE, an SAP Replication Server, or a server created using SAP Open Server. The request can originate from any of these servers or from a client application. The RPC request format is a part of the SAP Client/Server Interfaces.

The Replication Agent for SAP ASE databases. Replication Agent is an SAP ASE thread; it transfers transaction log information from the primary database to an SAP Replication Server for distribution to other databases.

A database that contains data replicated from another database (the primary database) through a replication system. The replicate database is the database that receives replicated data in a replication system. Contrast with primary database.

A method of replicating, from a source to a destination database, a stored procedure that is associated with a function replication definition. See also applied function, request function, and function replication definition.

An SAP ASE stored procedure that is marked as replicated using the sp_setrepproc system procedure. Replicated stored procedures can be associated with function replication definitions or table replication definitions. See also replicated function delivery and asynchronous procedure delivery.

A table that is maintained by SAP Replication Server, in part or in whole, in databases at multiple locations. There is one primary version of the table, which is marked as replicated using the sp_setreptable system procedure; all other versions are replicated copies.

A program or module that transfers transaction log information representing modifications made to primary data from a database server to an SAP Replication Server for distribution to other databases. RepAgent is the Replication Agent for SAP ASE databases.

The commands used to manage information in SAP Replication Server.

Usually, a description of a table for which subscriptions can be created. The replication definition, maintained by SAP Replication Server, includes information about the columns to be replicated and the location of the primary version of the table.

You can also create function replication definitions; sometimes the term “table replication definition” is used to distinguish between table and function replication definitions. See also function replication definition.

A distributed management agent that you can use to easily set up and manage replication from any supported databases to an SAP HANA database.

A thread that logs in to a destination SAP Replication Server and transfers commands from the source SAP Replication Server RSI outbound stable queue to the destination SAP Replication Server. There is one RSI thread for each destination SAP Replication Server that is a recipient of commands from a primary or intermediate SAP Replication Server. See also outbound queue and route.

The system administrator that manages routine operations in the Replication Server.

The SAP ASE database containing an SAP Replication Server system tables. The user can choose whether to store SAP Replication Server system tables on SAP ASE or embedded in an SAP SQL Anywhere database hosted by SAP Replication Server. See also Embedded Replication Server System Database (ERSSD).

The SAP ASE with the database containing an SAP Replication Server system tables.

A data processing system where data is replicated in multiple databases to provide remote users with the benefits of local data access. Specifically, a replication system that is based upon SAP Replication Server and includes other components such as Replication Agents and data servers.

All replication system components that use the same ID Server.

A replicated function, associated with a function replication definition, that SAP Replication Server delivers from a primary database to a replicate database. The function passes parameter values to a stored procedure that is executed at the replicate database. The stored procedure is executed at the replicate site by the same user as it is at the primary site. See also replicated function delivery, request function, and function replication definition.

When you restart Replication Agent in resync mode, Replication Agent sends the resync database marker to SAP Replication Server to indicate that a resynchronization effort is in progress. The resync marker is the first message Replication Agent sends before sending any SQL data definition language (DDL) or data manipulation language (DML) transactions.

A one-way message stream from a source Replication Server to a destination Replication Server. Routes carry data modification commands (including those for RSSDs) and replicated functions or stored procedures between Replication Servers. See also direct route and indirect route.

The lower of the site version numbers of the route’s source and destination SAP Replication Servers. The supported SAP Replication Server versions use the route version number to determine which data to send to the replicate site. See also site version.

The process whereby column value changes in rows in a primary version of a table cause corresponding rows in a replicate version of the table to be inserted or deleted, based on comparison with values in a subscription’s where clause.

The SAP version 11.5 and later relational database server. If you choose the RSSD option when configuring SAP Replication Server, SAP ASE maintains SAP Replication Server system tables in the RSSD database.

The SAP server program that maintains replicated data, typically on a LAN, and processes data transactions received from other SAP Replication Servers on the same LAN or on a WAN.

The structure of the database. DDL commands and system procedures change system tables stored in the database. Supported DDL commands and system procedures can be replicated to standby databases when you use SAP Replication Server version 11.5 or later and SAP ASE version 11.5 or later.

A column in a replicated table that can be specified in the where clause of a subscription or article to restrict the rows replicated at a site.

A parameter in a replicated stored procedure that can be specified in the where clause of a subscription to help determine whether or not the stored procedure should be replicated. See also parameter.

A secondary truncation point marks the place in the primary database log up to which the RepAgent has processed transactions. The RepAgent periodically updates the secondary truncation point to reflect transactions successfully passed to the SAP Replication Server. SAP ASE will not truncate the log past the secondary truncation point.

An installation consisting of, at minimum, an SAP Replication Server, data server, and database, and possibly a Replication Agent, usually at a discrete geographic location. The components at each site are connected over a WAN to those at other sites in a replication system. See also primary site.

The version number for an individual SAP Replication Server. Once the site version has been set to a particular level, the SAP Replication Server enables features specific to that level, and downgrades are not allowed. See also software version, route version, and system version.

The version number of the software release for an individual SAP Replication Server. See also site version and system version.

The SAP relational database pre-11.5 server.

The process in which the SAP Replication Server receives the SQL statement that modified the primary data, rather than the individual row changes from the transaction log. SAP Replication Server applies the SQL statement to the replicated site. RepAgent sends both the SQL Data Manipulation Language (DML) and individual row changes. Depending on your configuration, SAP Replication Server chooses either individual row change log replication or SQL statement replication.

A thread that manages the stable queues. There is one Stable Queue Manager (SQM) thread for each stable queue accessed by the SAP Replication Server, whether inbound or outbound.

A thread that reassembles transaction commands in commit order. A Stable Queue Transaction (SQT) interface thread reads from inbound stable queues, puts transactions in commit order, then sends them to the Distributor (DIST) thread or a DSI thread, depending on which thread required the SQT ordering of the transaction.

Store-and-forward queues where SAP Replication Server stores messages destined for a route or database connection. Messages written into a stable queue remain there until they can be delivered to the destination SAP Replication Server or database. SAP Replication Server builds stable queues using its disk partitions. See also inbound queue, outbound queue, and materialization queue.

An SAP Replication Server mode used for initiating recovery operations.

In a warm standby application, a database that receives data modifications from the active database and serves as a backup of that database. See also warm standby application.

A collection of SQL statements and optional control-of-flow statements stored under a name in an SAP ASE database. Stored procedures supplied with SAP ASE are called system procedures. Some stored procedures for querying the RSSD are included with the SAP Replication Server software.

A request for SAP Replication Server to maintain a replicated copy of a table, or a set of rows from a table, in a replicate database at a specified location. You can also subscribe to a function replication definition, for replicating stored procedures.

The optional process, when a subscription is dropped, whereby specific rows that are not used by other subscriptions are removed from the replicate database.

The process whereby column value changes in rows in a primary version of a table cause corresponding rows in a replicate version of the table to be inserted or deleted, based on comparison with values in a subscription’s where clause.

A Web-based solution for monitoring the status and availability of servers in a replication environment.

On a multiprocessor platform, the ability of an application’s threads to run in parallel. SAP Replication Server supports SMP, which can improve server performance and efficiency.

A command that a client submits where the client is prevented from proceeding with other operations before the completion status is received.

A function that is predefined and part of the SAP Replication Server product. Different system functions coordinate replication activities, such as rs_begin, or perform data manipulation operations, such as rs_insert, rs_delete, and rs_update.

SAP Replication Server provides the error class rs_sqlserver_error_class and the function-string classes rs_sqlserver_function_class, rs_default_function_class, and rs_db2_function_class. Function strings are generated automatically for the system-provided function-string classes and for any derived classes that inherit from these classes, directly or indirectly. See also error class and function-string class.

The version number for a replication system that represents the version for which new features are enabled, for SAP Replication Servers of release 11.0.2 or earlier, and below which no SAP Replication Server can be downgraded or installed. For an SAP Replication Server version 11.5, your use of certain new features requires a site version of 1150 and a system version of at least 1102. See also mixed-version system, site version, and software version.

Identifies a primary table and marks in order for SAP Replication Server to replicate its contents when inserted, updated or deleted. It 'publishes' the data in the publish-subscribe methodology used by SAP Replication Server.

A subscription to a table replication definition.

A process running within SAP Replication Server. Built upon SAP Open Server, SAP Replication Server has a multi-threaded architecture. Each thread performs a certain function such as managing a user session, receiving messages from a Replication Agent or another SAP Replication Server, or applying messages to a database. See also Data Server Interface (DSI), Distributor, and Replication Server Interface (RSI).

A mechanism for grouping statements so that they are treated as a unit: either all statements in the group are executed or no statements in the group are executed.

The relational database language used with SAP ASE. It is based on standard Structured Query Language (SQL), with Sybase extensions.

In an SAP ASE database that has an active truncation point, the active truncation point marks the point in the transaction log where SAP ASE has completed the write of the last committed transaction and will write the log record of the next transaction committed.

A function that allows you to create custom applications that use SAP Replication Server to distribute replicated functions or asynchronous stored procedures between sites in a replication system. In replicated function delivery, a user-defined function is automatically created by SAP Replication Server when you create a function replication definition.

See function-string variable.

See mixed-version system, site version, software version, and system version.

An application that employs SAP Replication Server to maintain a standby database for a database known as the active database. If the active database fails, SAP Replication Server and client applications can switch to the standby database.

A system of local-area networks (LANs) connected together with data communication lines.

Columns in a replication definition containing char, varchar, binary, varbinary, unichar, univarchar, or Java inrow data that are wider that 255 bytes.

Wide data rows, limited to the size of the data page on the data server. SAP ASE supports page sizes of 2K, 4K, 8K, and 16K.

Messages larger that 16K that span blocks.