After you’ve installed the DB2 server – there may be a situation where you need to uninstall DB2.

These notes will help

db2_deinstall -F  – Removes a feature from a  DB2 database product in the current location. Execute the command from the DB2DIR/install directory

db2_deinstall -a  Removes all installed DB2 database products in the current location. Executes  the command from the DB2DIR/install directory

DB2DIR is the location specified in the DB2 server installation

Example of Log created

DB2 Uninstall log file started at: ============================================================
Operating system information: Linux 2.6.9-67.ELsmp.#1 SMP Wed Nov 7 13:58:04 EST 2007 i686
Previously Installed Components: 
 Product Messages - English 
 Base client support 
 IBM Software Development Kit (SDK) for Java(TM) 
 Java Help (HTML) - English 
 Replication with MQ Server 
 Run-time Environment 
 Java support 
 SQL procedures 
 ICU Utilities 
 SQL Replication Support 
 Java Common files 
 Base server support 
 Control Center Help (HTML) - English 
 Connect support 
 Configuration Assistant 
 Spatial Extender client 
 Base application development tools 
 Administration Server 
 Communication support - TCP/IP 
 Control Center 
 Parallel Extension 
 Replication tools 
 Relational wrappers common 
 DB2 data source support 
 DB2 LDAP support 
 DB2 Instance Setup wizard 
 XML Extender 
 First Steps 
 DB2 Web Tools 
 Product Signature for DB2 Enterprise Server Edition 
 XML Extender samples 
 ADT sample programs 
 Sample database source 
 Spatial Extender samples 
 Informix data source support 
Selected Components: 
 Product Messages - English 
 Base client support 
 IBM Software Development Kit (SDK) for Java(TM) 
 Java Help (HTML) - English 
 Replication with MQ Server 
 Run-time Environment 
 Java support 
 SQL procedures 
 ICU Utilities 
 SQL Replication Support 
 Java Common files 
 Base server support 
 Control Center Help (HTML) - English 
 Connect support 
 Configuration Assistant 
 Spatial Extender client 
 Base application development tools 
 Administration Server 
 Communication support - TCP/IP 
 Control Center 
 Parallel Extension 
 Replication tools 
 Relational wrappers common 
 DB2 data source support 
 DB2 LDAP support 
 DB2 Instance Setup wizard 
 XML Extender 
 First Steps 
 DB2 Web Tools 
 Product Signature for DB2 Enterprise Server Edition 
 XML Extender samples 
 ADT sample programs 
 Sample database source 
 Spatial Extender samples 
 Informix data source support 
Languages: 
 English(already installed) 
Target directory: /opt/ibm/db2/V9.1
Preparing the system:.......Success
Stopping DB2 Fault Monitor:.......Success
Updating global registry:.......Success
Updating the db2ls link:.......Success
Executing control tasks:.......Success
Removing files for "INFORMIX_DATA_SOURCE_SUPPORT : Informix data source 
support".
Removing files for "SPATIAL_EXTENDER_SAMPLES : Spatial Extender samples".
Removing files for "DB2_SAMPLE_DATABASE : Sample database source".
Removing files for "DB2_SAMPLE_APPLICATIONS : ADT sample programs".
Removing files for "XML_EXTENDER_SAMPLES : XML Extender samples".
Removing files for "ESE_PRODUCT_SIGNATURE : Product Signature for DB2 
Enterprise Server Edition".
Removing files for "DB2_WEB_TOOLS : DB2 Web Tools".
Removing files for "FIRST_STEPS : First Steps".
Removing files for "XML_EXTENDER : XML Extender".
Removing files for "INSTANCE_SETUP_SUPPORT : DB2 Instance Setup wizard".
Removing files for "LDAP_EXPLOITATION : DB2 LDAP support".
Removing files for "DB2_DATA_SOURCE_SUPPORT : DB2 data source support".
Removing files for "RELATIONAL_WRAPPERS_COMMON : Relational wrappers common".
Removing files for "REPL_CLIENT : Replication tools".
Removing files for "DATABASE_PARTITIONING_SUPPORT : Parallel Extension".
Removing files for "CONTROL_CENTER : Control Center".
Removing files for "COMMUNICATION_SUPPORT_TCPIP : Communication support - 
TCP/IP".
Removing files for "ADMINISTRATION_SERVER : Administration Server".
Removing files for "APPLICATION_DEVELOPMENT_TOOLS : Base application 
development tools".
Removing files for "SPATIAL_EXTENDER_CLIENT_SUPPORT : Spatial Extender client".
Removing files for "CONFIGURATION_ASSISTANT : Configuration Assistant".
Removing files for "CONNECT_SUPPORT : Connect support".
Removing files for "DB2_CONTROL_CENTER_HELP_EN : Control Center Help (HTML) - 
English".
Removing files for "BASE_DB2_ENGINE : Base server support".
Removing files for "JAVA_COMMON_FILES : Java Common files".
Removing files for "REPL_SERVER : SQL Replication Support".
Removing files for "ICU_SUP : ICU Utilities".
Removing files for "SQL_PROCEDURES : SQL procedures".
Removing files for "JAVA_SUPPORT : Java support".
Removing files for "BASE_DB2_SERVER : Run-time Environment".
Removing files for "REPL_QSERVER : Replication with MQ Server".
Removing files for "DB2_JAVA_HELP_EN : Java Help (HTML) - English".
Removing files for "JDK : IBM Software Development Kit (SDK) for Java(TM)".
Removing files for "BASE_CLIENT : Base client support".
Removing files for "DB2_PRODUCT_MESSAGES_EN : Product Messages - English".
Deleting DB2 file sets:.......Success
Starting DB2 Fault Monitor:.......Success
Post Uninstall Recommendations
------------------------------
Manually remove the files that are not removed successfully if there is any in this log file.
DB2 Uninstall log file finished at: Thu Mar 29 15:12:32 2012 BST
============================================================