You can change the DBA and application password at any time. The password is encrypted using AES-128-CFB and stored in the vxdbms.conf file. The permissions for the vxdbms.conf file allow only a Windows administrator to read or write to it.
The default password that is set during installation is nbusql. This password is used for NBDB and BMRDB and for all DBA and application accounts. (For example, EMM_MAIN.)