Administration and Performance Guide
Adaptive Server IQ
Document ID
Contents
Contents
100
101
103
104
Contents Deleting views 131 Views in the system tables
132
135
138
Vii
Viii
Using cursors on Select statements in procedures 253
255
273
277
Contents Referential integrity is unenforced 284
285
299
309
323
339
352
Managing User IDs and Permissions
Xii
Xiii
448
454
459
467
473
476
479
481
Xvi
Xvii
How to use this book
Audience
Guide to using this book To learn how to Read this chapter
Related documents
Related documents
Documentation for Adaptive Server IQ
About This Book
Xix
Related documents
Overview of IQ system administration
Introduction to Adaptive Server IQ
System administration tasks
System administration tasks
Security overview
Overview of Adaptive Server IQ System Administration
Administrative tasks
Tools for system administration
Tools for system administration
Types of users
Granting permissions
Database server
Catalogs and IQ
Adaptive Server Anywhere and Adaptive Server IQ
IQ Store
Temporary Store
Catalog Store
Stored procedures
Concurrent operations
Adaptive Server IQ stored procedures
Stored procedures
Adaptive Server Enterprise system and catalog procedures
Stored Procedures for the IQ Store Procedure name Purpose
Adaptive Server Enterprise system procedures
System procedure Description
Catalog stored procedures
Adaptive Server Enterprise catalog procedures
Catalog procedure Description
Procedure name Purpose
System table Description
System tables and views
System tables and views
Sysdomain
Syslogin
System view Description
Sysuserauth
Commands and Functions
Commands and Functions
Types of SQL statements
Functions
Fourth line of the file contains version information
Message logging
Manipulate date and time data for example, TODAY, Datediff
Utility database
Utility database
Compatibility with earlier versions
Compatibility with earlier versions
Starting the database server
General form for the server command line is as follows
Server command lines
Server command lines
Starting the server on Unix
Running Adaptive Server IQ
Starting the server on Unix
Using the startup utility
To start the server on Unix using the startup utility
Typing the server startup command
Starting the server on Windows NT
Starting the server on Windows NT
Starting the server from the NT Start menu
Running the server outside the current session
Using command-line switches
Running the server as a Windows NT service
Using command-line switches
Running the Unix database server as a daemon
Case sensitivity Using configuration files
Elora 16M Tcpipport=2367 -gm Gp 4096 path\mydb.db
Naming the server and databases
Required if you do not supply a database
Window
Database started
Sample database on that server
Controlling performance from the command line
Setting memory switches
Default value of -iqgovernis 2 x the number of CPUs +10
This switch as the number of megabytes of wired memory
Use
Concurrent user connections on a particular server
Setting switches that affect timing
Controlling permissions from the command line
Other performance-related switches
Setting a maximum Catalog page size
Setting up a client/server environment
Selecting communications protocols
Limiting inactive connections
Starting a server in forced recovery mode
Starting a server from Dbisql
Server from Dbisql
Connections, and Catalog page size
Monitoring server activity
Starting multiple servers or clients on the same machine
Capture server activity in a log file
Log file name has this format
Monitoring server activity
Stopping the database server
Stopping the database server
PID
Who can stop the server?
Shutting down operating system sessions
Following example stops a server from Dbisql
Will be stopped even if there are connections to it
Starting and stopping databases
Starting and stopping databases
Starting the asiqdemo database
From a command line, type the following command
Command that executes when you perform these steps is
Starting and stopping Sybase Central
Starting and stopping Sybase Central
Connecting a plug-in
Connecting to a plug-in
Introduction to connections
Introduction to connections
Stopping Sybase Central
How connections are established
If you want Consider reading
Connection parameters specify connections
Connection parameters are passed as connection strings
Following form
This is equivalent to the following connection string
Simple connection examples
Connecting to a database from Dbisql
Simple connection examples
If you need to start the sample database, enter
To connect from a Unix system
To connect from a Windows NT system
Enter the user ID
Connecting to other databases from Dbisql
Password
To connect to a database from Dbisql on Unix
Connecting to an embedded database
Start Dbisql by typing at a system command prompt
Extra cache needed for Java
To connect to an embedded database from Dbsql in Windows NT
Connecting using a data source
To connect using a data source
Connecting to a server on a network
Using default connection parameters
Connecting from Adaptive Server IQ utilities
Named server, using the default database
You may connect to the wrong server
Database
Working with Odbc data sources
DSNs and FILEDSNs
Working with Odbc data sources
Creating and editing Odbc data sources
Creating and editing Odbc data sources
You could also use the host network address. For example
To create an Odbc User Data Source
To test an Odbc Data Source
Configuring Odbc data sources
Odbc tab
Prevent Driver Not Capable errors
Selecting this
Login tab
Database tab
Network tab
Advanced tab
Enter any additional switches here
Creating a File Data Source
Name of the file
Which the debugging information is to be saved
Using Odbc data sources on Unix
Using Odbc data sources on Unix
Connection parameters
Short Parameter Form Argument Description
Connection parameters
Not supported in Odbc connections
Parameters
Or NO, OFF, 0, or False if false
Connection parameters and their values are case insensitive
Specify database files using DBF
Specify database names using DBN
Connection parameter priorities
Use the Start parameter to specify cache size
How Adaptive Server IQ makes connections
Steps in establishing a connection
Unix dblib6 with an operating system-specific extension
Locating the interface library
How Adaptive Server IQ makes connections
Assembling a list of connection parameters
Connection file
AutoStop Ignored if the database is already loaded
Parameter
Is already running
Locating a server
Ways by supplying network communication parameters
How Adaptive Server IQ makes connections
Locating the database
Server name caching for faster connections
Connecting from other databases
Interactive SQL connections
Using an integrated login
Using an integrated login
To use an integrated login
Using integrated logins
Enabling the integrated login feature
To map an integrate login using a SQL statement
Creating an integrated login
To map an integrated login from Sybase Central
Can connect to a database if all the following are true
Connecting from a client application
Following Dbisql statement
Security concerns unrestricted database access
Setting temporary public options for added security
Network aspects of integrated logins
Creating a default integrated login user
Ensure that your files are valid
Troubleshooting startup, shutdown, and connections
What to do if you can’t start Adaptive Server IQ
Debugging network communications startup problems
Troubleshooting startup, shutdown, and connections
Ensure that network communication software is running
Check environment variables
What to do if you can’t connect to a database
Resolving problems with your Dbisql window on Unix
Stopping a database server in an emergency Unix
Running Adaptive Server IQ
Troubleshooting startup, shutdown, and connections
Building Your Adaptive Server IQ Databases
Designing your database
Using Sybase Central to work with database objects
Tools for working with database objects
Building Your Adaptive Server IQ Databases
100
Step-by-step overview of database setup
Using Dbisql to work with database objects
Working with Database Objects
101
102
To set up an IQ database
Scheduling data definition tasks
Extending data definition privileges
103
104
Selecting a device type
Allocating space for databases
Estimating space and dbspaces required
105
106
Working with databases
Working with databases
Creating a database
107
108
109
110
Choosing an IQ page size
111
112
Specifying the size of your database
Choosing a Catalog page size
Choosing a block size for your database
Enabling Java in the database
IQ Store size is 8MB and the Temporary Store is 4MB
113
Adding dbspaces
114
115
To create a dbspace in Sybase Central
Dropping dbspaces
116
=======================================================
117
Working with tables
Dropping a database
Creating tables
Working with tables
119
Types of tables
120
Table placement
Type of table Permitted placement Default placement
Automatic index creation for IQ tables
121
Optimizing storage and query performance
Data type of the column and its width
See the following table for implications of IQ Unique
122
Altering tables
123
To drop a table in Sybase Central
Dropping tables
124
To create a primary key in Sybase Central
Creating primary and foreign keys
125
126
Working with views
Table information in the system tables
127
To create an unenforced foreign key in Sybase Central
Creating views
Working with views
Definition in the database system tables
128
To create a view in Sybase Central
Using views
129
Modifying views
Permissions on views
An existing view definition
Alter View statement maintains the permissions on the view
131
Deleting views
Views in the system tables
Working with indexes
Introduction to indexes
Working with indexes
132
133
Creating indexes
Indexes in the system tables
Removing indexes
134
Overview of indexes
Adaptive Server IQ index types
Indexing
135
Overview of indexes
136
137
Benefits over traditional indexes
Adaptive Server IQ Indexes
Creating Adaptive Server IQ indexes
Create Index statement
Creating Adaptive Server IQ indexes
Region column of the salesorder table
Creating an index with Sybase Central
Creating indexes concurrently
139
To create an index with Sybase Central
140
Choosing an index type
Choosing an index type
141
Number of unique values in the index
Types of queries
Type of Query Usage Recommended Index Type
142
Query type/index
Only the default index supports the following data types
Indexing criteria disk space usage
Data types in the index
143
Adaptive Server IQ index types
Combining index types
Adaptive Server IQ index types
144
Default column index
LowFast LF index type
Projections on few rows
Recommended use
HighGroup HG index type
Advantages and disadvantages of LowFast
Comparison with other indexes
Additional indexes
Advantages and disadvantages of HighGroup
Automatic creation of HighGroup index
147
HG advantages/disadvantages Advantages Disadvantages
148
HighNonGroup HNG index type
Advantages and disadvantages of HighNonGroup
Optimizing performance for ad hoc joins
Comparison to other indexes
HighGroup index is also appropriate for an HNG column
149
Criteria to identify Index to select
Selecting an index
150
Using join indexes
Adding column indexes after inserting data
Join indexes improve query performance
151
When a join becomes ad hoc
How join indexes are used for queries
Relationships in join indexes
Join hierarchy overview
Columns in the join index
153
154
Join hierarchy in query resolution
One-to-many relationship
155
Custid Lname
Multiple table joins and performance
156
Steps in creating a join index
157
158
Synchronizing join indexes
Privileges needed to create a join index
159
Defining join relationships between tables
Performance hints for synchronization
160
Using foreign references
Examples of join relationships in table definitions
161
Specifying the join type when creating a join index
Specifying relationships when creating a join index
162
Parameters of this command are
Issuing the Create Join Index statement
163
Creating a join index in Sybase Central
Types of join hierarchies
164
To add a join index in Sybase Central
165
Linear joins
Star joins
166
You can create this table using the following commands
Another table
Modifying tables included in a join index
167
Inserting or deleting from tables in a join index
168
169
Table versioning controls access to join indexes
Estimating the size of a join index
Estimating the size of a join index
170
Import and export overview
Import and export methods
Databases
171
Input and output data formats
Import and export overview
172
File Format Description
Scheduling database updates
Permissions for modifying data
Specifying an output format for Interactive SQL
Moving Data In and Out of Databases
Using output redirection
Exporting data from a database
Exporting data from a database
174
175
Bulk loading data using the Load Table statement
Null value output
Bulk loading data using the Load Table statement
176
Format ’ascii’ ’binary’ Delimited by string
Quotes on OFF Escapes on OFF Escape Character character
177
Binary with Null Byte Prefix 1 2 4 ’delimiter-string’
178
179
180
181
Block Factor number Block Size number
Preview on OFF ROW Delimited by ’delimiter-string’
Start ROW ID number
On default is NATIVE. You can also specify
Specifies the byte ordering during reads. This
Endian platforms like DEC ALPHA, and Windows NT
Here is a Windows NT example
Table. The default is 0 for no limit
Specifies the maximum number of rows to insert into
Options work together
183
184
Following Windows NT example sets the column delimiter for
Carriage return \x0d
With the Limit option, and takes precedence over it
185
186
Interpreting notification messages
Memory message
This message displays memory usage information
187
Main IQ Store blocks messages
IQ Temporary Store blocks message
Main buffer cache activity message
188
Temporary buffer cache message
Controlling message logging
These lines display information about the Temp buffer cache
See the description for the Main buffer cache message above
Using the Insert statement
Using the Insert statement
Inserting specified values row by row
190
Inserting selected rows from the database
Complete description of Adaptive Server IQ data types
Following example adds 1995-06-09 into the lshipdate column
Into the lorderkey column in the lineitem table
192
Inserting from a different database
Inserting selected rows from the database
Issue a Commit to commit the insert
Lineitem table in the current database
193
To insert data directly from Adaptive Server Enterprise
194
195
Importing data interactively
Inserting into tables of a join index
196
Inserting into primary and foreign key columns
Inserting into primary and foreign key columns
Partial-width insertions
197
198
Partial-width insertion rules
Partial-width insertions
Query
Additional columns
Instead of the correct number
199
Start ROW ID option in the second Load Table statement
200
Index
201
202
Converting data on insertion
Converting data on insertion
203
Inserting data from pre-Version 12 Adaptive Server IQ
Load conversion options
204
Conversion options for loading from flat files
Data conversions in IQ
205
206
IQ conversions for comparison operations
207
IQ conversions for arithmetic operations
208
Column width issues
Using the Ascii conversion option
209
Date Option
Substitution of Null or blank characters
Specifying the Date Format
210
211
212
Setting Year specified as Years assumed
Datetime conversion option
Specifying the format for Datetime conversions
213
10 Datetime format options
214
Formatting times
215
Where Blanks indicates that blanks convert to Nulls
Working With Nulls
216
Other factors affecting the display of data
Other factors affecting the display of data
217
Matching Adaptive Server Enterprise data types
Unsupported Adaptive Server Enterprise data types
218
Adaptive Server Enterprise data type equivalents
Matching Adaptive Server Enterprise data types
219
Adaptive Server Adaptive Server IQ Enterprise Datatype
13 Character data types
Adaptive Server Enterprise Datatype IQ Datatype
15 DATE/TIME data types
Handling conversion errors on data import
220
Tuning bulk loading of data
Improving load performance during database definition
Optimizing for the number of distinct values
Creating indexes
Setting server startup options
Adjusting your environment at load time
Tuning bulk loading of data
Adding dbspaces
Reducing Main IQ Store space use in incremental loads
223
224
Changing data using Update
Changing data using Update
Deleting data
225
226
Importing data by replication
Importing data by replication
227
228
Overview of procedures
Adaptive Server IQ
Statements, are also available in batches
229
Benefits of procedures
Introduction to procedures
Benefits of procedures
230
231
Creating procedures
Using Procedures and Batches
Calling procedures
Dropping procedures
Introduction to procedures
232
233
Permissions to execute procedures
Returning procedure results in parameters
Employee ID Salary
Returning procedure results in result sets
234
235
Introduction to user-defined functions
Creating user-defined functions
Calling user-defined functions
Introduction to user-defined functions
236
Fullname empfname, emplname
Dropping user-defined functions
Permissions to execute user-defined functions
Following statement revokes permission to use the function
237
238
Introduction to batches
Introduction to batches
Dbisql and batches
Control statements
239
Using compound statements
Control statements
240
Control statement Syntax
Declarations in compound statements
241
Atomic compound statements
242
243
Structure of procedures
SQL statements allowed in procedures
244
Declaring parameters for procedures
Structure of procedures
Passing parameters to procedures
Passing parameters to functions
Or as follows
245
Returning results from procedures
Returning a value using the Return statement
Returning results from procedures
246
Returning results as procedure parameters
247
Declared in the procedure argument list
Show the number of orders placed by the customer with ID
CustomerID parameter is declared as an in parameter. This
Orders variable that is returned to the calling environment
Returning result sets from procedures
249
Returning multiple result sets from procedures
Returning variable result sets from procedures
Procedure
250
Using cursors in procedures
251
Using cursors in procedures
Cursor management overview
Cursor positioning
252
Using cursors on Select statements in procedures
253
254
Errors and warnings in procedures
255
256
Default error handling in procedures
Errors and warnings in procedures
257
Error handling with on Exception Resume
258
259
On Exception Resume Begin
Default handling of warnings in procedures
260
Using exception handlers in procedures
261
262
Nested compound statements and exception handlers
263
264
Using the Execute Immediate statement in procedures
Following statement executes the InnerProc procedure
Transactions and savepoints in procedures
Some tips for writing procedures
Check if you need to change the command delimiter
265
Remember to delimit statements within your procedure
Use fully-qualified names for tables in procedures
Specifying dates and times in procedures
Some tips for writing procedures
267
Verifying procedure input arguments
Statements allowed in batches
268
Calling external libraries from procedures
Using Select statements in batches
Creating procedures and functions with external calls
269
270
External function declarations
Following form for Microsoft Visual C++
How parameters are passed to the external function
271
Special considerations when passing character types
272
273
Data integrity overview
How data can become invalid
274
Integrity constraints belong in the database
Data integrity overview
How database contents get changed
Data integrity tools
SQL statements for implementing integrity constraints
276
277
Using table and column constraints
Using Unique constraints on columns or tables
Using IQ Unique constraint on columns
Using Check conditions on columns
Using table and column constraints
278
279
Column Check conditions from user-defined data types
Option
Using Check conditions on tables
Working with column constraints in Sybase Central
Modifying and deleting Check conditions
280
Declaring entity and referential integrity
281
282
Enforcing entity integrity
If a client application breaches entity integrity
283
Primary keys enforce entity integrity
Declaring referential integrity
284
How you define foreign keys
Referential integrity is unenforced
Integrity rules in the system tables
285
Integrity rules in the system tables
286
Performance and other aspects of database administration
Overview of transactions and versioning
Introduction to transactions
Transactions are logical units of work
Using transactions
Starting transactions
Completing transactions
Overview of transactions and versioning
Options in Dbisql
Committing a transaction writes data to disk
Transactions and Versioning
289
Introduction to concurrency
Subdividing transactions
How concurrency works in IQ
290
Concurrency for backups
Why concurrency benefits you
Introduction to versioning
Concurrency and IQ Multiplex
292
Table-level versioning
One writer and multiple readers at the table level
293
Only one writer at a time
Multiple writers and readers in a database
294
Transactions use committed data
295
Timing of commits on read transactions affects versions
296
Hold cursors span transactions
297
298
How Adaptive Server IQ keeps track of versions
Versioning of temporary tables
Versioning prevents inconsistencies
How locking works
Locks for DML operations
299
300
Locks for DDL operations
How locking works
301
Isolation levels
Primary keys and locking
Isolation levels
302
Checkpoints, savepoints, and transaction rollback
303
Checkpoints aid in recovery
When checkpoints occur
Checkpoints
Checkpoints, savepoints, and transaction rollback
305
Savepoints within transactions
Releasing savepoints
Rolling back to a savepoint
Automatic and user-defined savepoints
Naming and nesting savepoints
Following scenario
System recovery
Rolling back transactions
What causes a rollback
Effect of rollback
How transaction information aids recovery
308
Performance implications
309
310
Overlapping versions and deletions
Performance implications
Cursors in transactions
311
Cursors and versioning
Cursor sensitivity
Cursor scrolling
Cursors in transactions
Cursor command syntax and examples
Hold cursors
Positioned operations
Controlling message logging for cursors
314
Adaptive Server IQ international features
Installation to handle international language issues
Introduction to international languages and character sets
315
Using the default collation
Character set questions and answers
Introduction to international languages and character sets
316
Understanding character sets in software
Pieces in the character set puzzle
International Languages and Character Sets
317
Database server software messages Applications can cause
Language issues in client/server computing
318
Code pages in Windows and Windows NT
319
Ansi and OEM code pages in Windows and Windows NT
320
Multibyte character sets
321
Sorting characters using collations
International aspects of case sensitivity
First-byte collation orderings for multibyte character sets
322
Understanding locales
Introduction to locales
Case insensitivity of identifiers
323
324
Understanding the locale language
Understanding locales
Alternative Language label Label ISO639 language code
Understanding the locale character set
325
Character set Label Iana label Description
Equivalent Iana labels and a description
326
327
Setting the Sqllocale environment variable
Understanding collations
Understanding the locale collation label
Displaying collations
Supplied collations
Following collations are supplied with Adaptive Server IQ
329
Collation Label Type Description
330
Ansi or OEM?
331
332
333
334
335
Using multibyte collations
Understanding character set translation
Character translation for database messages
Understanding character set translation
337
To use character translation for database messages
338
Connection strings and character sets
Avoiding character-set translation
Language Character set
Collation internals
339
Comment lines
Title line
Collation internals
340
Specification Description
Collation sequence section
Following are some sample lines for a collation
341
Encodings section
That will be sorted together
Following is part of the Shift-JIS collation file
342
Properties section
343
Finding the default collation
Configuring your character set environment
To configure your character set environment
International language and character set tasks
You can determine locale information using system functions
Determining locale information
345
To determine the locale of a database server
Setting locales
Creating a database with a named collation
Your current machine
346
List the supplied collation sequences
347
Starting a database server using character set translation
Using Odbc code page translation
To enable character-set translation on a database server
Or on Unix
Character set translation for Sybase Central and Dbisql
Creating a custom collation
Set the Dbisql option CHAROEMTranslation to a value of OFF
349
350
Compatibility issues
Creating a database with a custom collation
351
To create a database with a custom collation
352
Performance issues
Performance issues
353
An overview of database permissions
Manage user IDs
354
DBA authority overview
An overview of database permissions
Resource authority overview
Ownership permissions overview
Table and views permissions overview
Managing User IDs and Permissions
356
Managing individual user IDs and permissions
Group permissions overview
Changing a password
With the following command
Creating new users
357
Granting DBA and resource authority
358
Granting permissions on tables and views
359
Granting users the right to grant permissions
Context of groups in Permissions of groups
360
To grant user permission on tables in Sybase Central
361
Granting permissions on procedures
To grant user permissions on procedures in Sybase Central
Revoking user permissions
362
To create a group with a name and password
Managing groups
Creating groups
363
Granting group membership to users
Managing groups
364
To create a group in Sybase Central
365
Permissions of groups
Referring to tables owned by groups
Groups without passwords
366
367
Database object names and prefixes
Special groups
Database object names and prefixes
368
369
Using views and procedures for extra security
Following command will now work
370
Using views for tailored security
Using views and procedures for extra security
371
Using procedures for tailored security
Grant permission for the Sales Manager to examine this view
How user permissions are assessed
Managing the resources connections use
How user permissions are assessed
Be modified is strictly defined
Temporary Store
373
Users and permissions in the system tables
Users and permissions in the system tables
Limits the number of prepared
374
375
Default Contents
Views Default Contents
376
Backup protects your data
377
Types of backups
Data in backups
Backing up your database
Backing up your database
379
Transaction log in backup, restore, and recovery
Backup and Data Recovery
Distribution of backup data
Disk backup requirements
Tape backup requirements
Selecting archive devices
Preparing for backup
Obtaining DBA privileges
Rewinding tapes
381
Retaining old disk backups
Two ways to run Backup
You can run Backup in two ways
Estimating Media Capacity
Concurrency and backups
Backup statement
To back up an IQ database, use the following syntax
383
Specifying the type of backup
Specifying operator presence
Specifying archive devices
384
385
386
387
Backup Examples
Other backup options
Waiting for Tape Devices
388
Recovery from errors during backup
Checking for backup space
Recovery attempts
389
After you complete a backup
Performing backups with non-Sybase products
Do not specify the Stacker or Size parameters
390
391
Performing system-level backups
Shutting down the database
Restoring from a system-level backup
Performing system-level backups
Backing up the right files
392
For this size database It takes about this long
Validating your database
393
Interpreting results
Validating your database
394
Orphaned block statistic Meaning
Concurrency issues for spiqcheckdb
395
Before you restore
Restoring your databases
Restoring your databases
396
Restore accommodates dbspace changes
397
Restoring disk backup files
Restoring tape backup files
Specifying files for an incremental restore
Keeping the database unchanged between restores
Restore statement
Restoring from a compatible backup
To restore a database, use the following syntax
399
Moving database files
400
401
402
Adjusting data sources and configuration files
Restoring in the correct order
Displaying header information
403
404
Set, and the restore order, are as follows
Set must be restored first, and must be in the first device
Renaming the transaction log after you restore
Dblog command-line utility
Switch Description
405
Validating the database after you restore
Restore requires exclusive write access
Transaction log utility options
Maintaining a transaction log or mirror
Displaying header information
407
408
Recovery from errors during restore
Using Symbolic Links Unix Only
Unattended backup
409
Getting information about backups and restores
Locating the backup log
Getting information about backups and restores
410
Content of the backup log
411
Maintaining the backup log
Viewing the backup log in Sybase Central
Recording dbspace names
412
Determining your data backup and recovery strategy
413
Scheduling routine backups
Determining the type of backup
Determining your data backup and recovery strategy
414
Designating Backup and Restore Responsibilities
Improving performance for backup and restore
Increasing the number of archive devices
415
Spooling backup data
Increasing memory used during backup
Eliminating data verification
Balancing system load
Controlling the size of the Catalog Store
417
418
DBA can tune performance by adjusting resource usage
Your hardware and software configuration
Introduction to performance terms
Designing for performance
Overview of memory use
Paging increases available memory
Overview of memory use
420
Utilities to monitor swapping
Server memory
Managing System Resources
421
422
Managing buffer caches
Determining the sizes of the buffer caches
423
Operating system and other applications
Adaptive Server IQ memory overhead
Multi-user database access
424
Raw partitions versus file systems
Memory requirements for loads
Buffer caches and physical memory
Adaptive Server IQ main and temp buffer caches
425
Example of setting buffer cache sizes
426
Other considerations
Memory available for buffer caches Example
427
Setting buffer cache sizes
Methods of adjusting buffer cache sizes
To change the buffer cache sizes permanently
Setting buffer cache size database options
428
Setting buffer cache size server switches
Setting the page size
Normally you change the buffer cache sizes by setting
Specifying page size
Block size
430
Decrease buffer cache settings
Adjust blocking factor for loads
Saving memory
Data compression
IQ command line option changes
Actively using the database
Optimizing for large numbers of users
Use the following guideline to determine Block Factor
Command and set rlimfdmax=4096 in /etc/system
IQ Temp space
System parameters
433
Platform-specific memory options
434
Recommendations for small memory configurations
Physical size of memory on the system
Options that can provide more memory
435
436
You must then restart the server with the following command
Managing large buffer caches on HP
Controlling file system buffering
437
438
Options for Java-enabled databases
Other ways to get more memory
Process threading model
439
Insufficient threads error
IQ options for managing thread usage
Process threading model
440
441
Balancing I/O
Raw I/O on Unix operating systems
Using disk striping
Setting up disk striping on Unix
Setting up disk striping on Windows NT
Balancing I/O
443
Internal striping
Recommendations for disk striping
444
Disk striping option
Disk striping hints
Using multiple dbspaces
Temporary data with the Create Dbspace command
Transaction log file
Across multiple disks
446
Strategic file locations
Message log
Working space for inserting, deleting, and synchronizing
447
Options for tuning resource use
Options for tuning resource use
Restricting concurrent queries
448
Limiting a query’s memory use
Limiting queries by rows returned
Forcing cursors to be non-scrolling
449
Limiting the number of cursors
Limiting the number of statements
Lowering a connection’s priority
Prefetching cache pages
Restricting database access
Other ways to improve resource use
Optimizing for typical usage
Disk caching
Using RAM disk
Indexing tips
Picking the right index type
Indexing tips
453
Using join indexes
Allowing enough disk space for deletions
Managing database size and structure
Managing the size of your database
Denormalizing for performance
Managing database size and structure
Denormalization has risks
Disadvantages of denormalization
Performance benefits of denormalization
455
Improving your queries
Deciding to denormalize
Tips for structuring queries
Improving your queries
457
Planning queries
Query evaluation options
Setting query optimization options
458
459
Network performance
Improving large data transfers
460
Isolate heavy network users
Network performance
Put small amounts of data in small packets
461
Put large amounts of data in large packets
462
463
Process at the server level
Filter as much data as possible at the server level
464
Getting information using stored procedures
Other chapters of this guide for more tuning hints
Viewing the Adaptive Server IQ environment
Set to control resource use, see , Managing System
Viewing the Adaptive Server IQ environment
466
Monitoring and Tuning Performance
Monitoring the buffer caches
Starting the buffer cache monitor
467
Monitoring the buffer caches
468
469
470
471
Stopping the buffer cache monitor
Examining and saving monitor results
472
Into dummytablename Stop Monitor
473
Examples of monitor results
Buffer cache
474
-contentionresults for the main cache are
-contentionresults for the temp cache are
Results for the memory manager are
475
476
Avoiding buffer manager thrashing
Avoiding buffer manager thrashing
Monitoring paging on Windows NT systems
Monitoring paging on Unix systems
Here is an example
477
478
System utilities to monitor CPU use
479
System utilities to monitor CPU use
480
Client/server interfaces to Adaptive Server IQ
Data server for client applications
Restrictions for creating and running these applications
481
Client/server interfaces to Adaptive Server IQ
482
Configuring IQ Servers with Dsedit
Interfaces file
Adaptive Server IQ as a Data Server
483
Using the Dsedit utility
Opening a Directory Services session
Starting Dsedit
484
Adding a server entry
Adding or changing the server address
Interfaces file sql.ini
Select a server entry in the Server box
Network Settings, in the Control Panel
486
487
Verifying the server address
Renaming a server entry
Sybase applications and Adaptive Server IQ
Open Client applications and Adaptive Server IQ
Deleting server entries
488
Setting up Adaptive Server IQ as an Open Server
System requirements
Starting the database server as an Open Server
489
490
Configuring your database for use with Open Client
Setting up Adaptive Server IQ as an Open Server
Option Set to
Characteristics of Open Client and jConnect connections
491
492
Characteristics of Open Client and jConnect connections
To change the option settings for TDS connections
493
Servers with multiple databases
To connect to the livecredit server, use this syntax
494
Index
495
Index
496
497
WINLATIN1
498
Datetime
499
Odbc Unix
500
501
DDL
502
Pipenotconnected
503
504
See Also Dbisql
505
506
507
Null
508
TCP/IP
509
See Also stored
510
Rawdetect
511
512
513
514
515
516