1. docker ps

2.docker  exec -it 813cb755c14c /bin/bash

3.su  -  db2inst1 进入DB2账户下

4.db2 list db directory 列出目前所有数据库

5. db2 直接进入db2数据库命令行模式

6.db2 connect to testdb(testdb数据库名称) 如果需要对某一个数据库操作先连接进去

6.？查看DB2命令帮助指引

db2 => ?

ACTIVATE DATABASE        GET CONTACTS               REFRESH LDAP

ADD CONTACT              GET/UPDATE DB CFG          REGISTER LDAP

ADD CONTACTGROUP         GET/UPDATE DBM CFG         REGISTER XMLSCHEMA

ADD DBPARTITIONNUM       GET DBM MONITOR SWITCHES   REGISTER XSROBJECT

ADD XMLSCHEMA            GET DESCRIPTION FOR HEALTH REORG INDEXES/TABLE

ARCHIVE LOG              GET NOTIFICATION LIST      REORGCHK

ATTACH                   GET HEALTH SNAPSHOT        RESET ADMIN CFG

AUTOCONFIGURE            GET INSTANCE               RESET ALERT CFG

BACKUP DATABASE          GET MONITOR SWITCHES       RESET DB CFG

BIND                     GET RECOMMENDATIONS        RESET DBM CFG

CATALOG APPC NODE        GET ROUTINE                RESET MONITOR

CATALOG APPN NODE        GET SNAPSHOT               RESTART DATABASE

CATALOG DATABASE         HELP                       RESTORE DATABASE

CATALOG DCS DATABASE     HISTORY                    REWIND TAPE

CATALOG LDAP DATABASE    IMPORT                     ROLLFORWARD DATABASE

CATALOG LDAP NODE        INITIALIZE TAPE            RUNCMD

CATALOG LOCAL NODE       INSPECT                    RUNSTATS

CATALOG NPIPE NODE       LIST ACTIVE DATABASES      SET CLIENT

LIST COMMAND OPTIONS     LIST APPLICATIONS          SET RUNTIME DEGREE

CATALOG ODBC DATA SOURCE LIST DATABASE DIRECTORY    SET TABLESPACE CONTAINERS

CATALOG TCPIP NODE       LIST DB PARTITION GROUPS   SET TAPE POSITION

CHANGE DATABASE COMMENT  LIST DBPARTITIONNUMS       SET UTIL_IMPACT_PRIORITY

CHANGE ISOLATION LEVEL   LIST DCS APPLICATIONS      SET WRITE

COMPLETE XMLSCHEMA       LIST DCS DIRECTORY         START DATABASE MANAGER

CREATE DATABASE          LIST DRDA INDOUBT          START HADR

CREATE TOOLS CATALOG     LIST HISTORY               STOP DATABASE MANAGER

DEACTIVATE DATABASE      LIST INDOUBT TRANSACTIONS  STOP HADR

DECOMPOSE XML DOCUMENT   LIST NODE DIRECTORY        TAKEOVER HADR

DECOMPOSE XML DOCUMENTS  LIST ODBC DATA SOURCES     TERMINATE

DEREGISTER               LIST PACKAGES/TABLES       UNCATALOG DATABASE

DESCRIBE                 LIST TABLESPACE CONTAINERS UNCATALOG DCS DATABASE

DETACH                   LIST TABLESPACES           UNCATALOG LDAP DATABASE

DROP CONTACT             LIST UTILITIES             UNCATALOG LDAP NODE

DROP CONTACTGROUP        LOAD                       UNCATALOG NODE

DROP DATABASE            LOAD QUERY                 UNCATALOG ODBC DATA

DROP DBPARTITIONNUM      PING                       UNQUIESCE DATABASE

DROP TOOLS CATALOG       PREP/PRECOMPILE            UNQUIESCE INSTANCE

ECHO                     PRUNE HISTORY/LOGFILE      UPDATE ALERT CFG

EDIT                     PUT ROUTINE                UPDATE COMMAND OPTIONS

EXPORT                   QUERY CLIENT               UPDATE CONTACT

FORCE APPLICATION        QUIESCE DATABASE           UPDATE CONTACTGROUP

GET/UPDATE ADMIN CFG     QUIESCE INSTANCE           UPDATE NOTIFICATION LIST

GET ALERT CFG            QUIESCE TABLESPACES        UPDATE HISTORY

GET/UPDATE CLI CFG       QUIT                       UPDATE LDAP NODE

GET CONNECTION STATE     REBIND                     UPDATE MONITOR SWITCHES

GET CONTACTGROUP         RECOVER                    UPGRADE DATABASE

GET CONTACTGROUPS        REDISTRIBUTE DB PARTITION  XQUERY

Note:  Some commands are operating system specific and may not be available.

For further help:

? db2-command   - help for specified command

? OPTIONS       - help for all command options

? HELP          - help for reading help screens

The preceding three options can be run as db2 from an OS prompt.

!db2ic          - DB2 Information Center (Windows only)

This command can also be run as db2ic from an OS prompt.