Firebird Database Cache Buffer Norman Dunbar, Martin Köditz Version 1.2, 28 May 2020 Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. The Firebird Cache. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table of Contents 1 Chapter 1. Introduction Firebird uses a page cache to hold pages in memory. It is much quicker to retrieve pages from RAM than to go out onto the disc

Der Firebird Cache-Buffer Norman Dunbar, Martin Köditz Version 1.2-de, 28. Mai 2020 Inhaltsverzeichnis 1. Einleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Der Firebird-Cache. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Inhaltsverzeichnis 1 Kapitel 1. Einleitung Firebird nutzt einen Seiten-Cache (engl. page cache), um die Seiten im Speicher vorzuhalten. Diese sind deutlich schneller aus dem Arbeitsspeicher

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7. Cache Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the first data file added. Coming up in the remainder of this manual, we will discuss the following: • Command line options for the gfix database utility. • Shadow file handling. • Cache and buffer buffer handling. • Transaction management. • Cache management. • Starting and stopping a database. • And much, much more … Chapter 1. Introduction 3 Chapter 2. Command Line Options Running gfix without

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.6. Change The Cache Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . onwards. -M[ETA_DATA] This switch causes your data to be ignored and not backed up or restored. In a backup, only the database meta data are backed up. When used in a restore, any data in the dump file creating database clones which are required to contain only the tables, indices etc but none of the data. -PAS[SWORD] Supplies the password for the username specified above. This need not be

error_updating_sec_db An error occurred while updating the security database. -103 335544571 dsql_constant_err Data type for constant unknown -104 336003075 dsql_transitional_numeric Precision 10 to 18 changed from (expected %ld, encountered %ld) -171 335544618 return_mode_err Return mode by value not allowed for this data type -172 335544438 funnotdef Function %s is not defined -203 335544708 dyn_fld_ambiguous Ambiguous 335544568 text_subtype Implementation of text subtype %d not located. -204 335544573 dsql_datatype_err Data type unknown -204 335544580 dsql_relation_err Table unknown -204 335544581 dsql_procedure_err Procedure

while updating the security Firebird 2.1 Error Codes database. -103 335544571 dsql_constant_err Data type for constant unknown -104 336003075 dsql_transitional_numeric Precision 10 to 18 changed from -171 335544618 return_mode_err Return mode by value not allowed for this data type -171 335544873 array_max_dimensions Array data type can use up to @1 dimensions -172 335544438 funnotdef Function @1 is 335544568 text_subtype Implementation of text subtype @1 not located. -204 335544573 dsql_datatype_err Data type unknown -204 335544580 dsql_relation_err Table unknown -204 335544581 dsql_procedure_err Procedure

security database. Firebird 1.5 Error Codes Updated 04/30/04 p. 2 -103 335544571 dsql_constant_err Data type for constant unknown -104 335544343 invalid_blr Invalid request BLR at offset -104 , encountered ) -171 335544618 return_mode_err Return mode by value not allowed for this data type -172 335544438 funnotdef Function is not defined -203 335544708 dyn_fld_ambiguous text_subtype Implementation of text subtype not located. -204 335544573 dsql_datatype_err Data type unknown -204 335544580 dsql_relation_err Table unknown -204 335544581 dsql_procedure_err Procedure

. . 24 3. Data Types and Subtypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.1. Integer Data Types . . . Floating-Point Data Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.2.1. Approximate Floating-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.3. Fixed-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

connec- tion, each with its own cache. Less re- source use if the number of connections is low. Single server process with a separate thread for each connection. Shared cache space. More efficient if the success- fully. If you have enough privileges but invoking gsec results in a message like “unavailable data- base - unable to open database”, the server probably isn't running. In that case, go back to Testing for interactive SQL [utility]. You can use it for querying data, getting information about the metadata, creating database objects, running data definition scripts and much more. To get back to the command

............................................................................... 366 ON EXTERNAL [DATA SOURCE] ........................................................................ 366 Особенности Зарезервированные и ключевые слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language — язык создания данных); • Операторы DML (Data Manipulation Language — язык обращения с данными); • Операторы управления NUMERIC(4) SMALLINT NUMERIC(4,2) SMALLINT (data * 102) NUMERIC(10,4) DOUBLE PRECISION в 1-ом диалекте BIGINT в 3-ем диалекте (data * 104) Внимание Всегда надо помнить