DB2 license expiration solution: the db2licm-l command can view the license information of db2. If the license expires: (I can provide V9.5 and V9.7 license QQ: 97573122 for free to help more people) www.2cto.com can find a permanent license and add it to the db2 database to put db2ese_c.lic in the following directory: /opt/ibm/db2/V9.1/license/db2ese_c.lic run db2licm-a/opt/IBM/db2/V9.1/adm/in the/opt/ibm/db2/V9.1/license directory /db2ese_c.lic: LIC1402I License added successfully. check with db2licm-l. You will find that your db2 has become permanent, in the future, we will not be afraid that the db2 database will expire ********************************* * **************** verify the communication protocol used by the instance for the existing DB2 database www.2cto.com db2 list db directory db2 list db directory show detail, check the DB2COMM variable db2set-all to view the configuration of the Database Manager, and check whether there is a port corresponding to the SVCENAME in/etc/services in db2 get dbm cfg. For example: db2cdb250000/tcp