I have just ran into this problem today, when configuring my test instance of TAMeSSO (lately known as ISAM - IBM Security Access Manager for Enterprise Single Sign-on).
After installing WAS7 and IMS server package, I tried to configure my IMS server. But it failed with error SQL06013N on WAS side, when attempting to create DB tables (on the screen you can see below, procedure dropped with error at ~6%)
After a quick search and a conversation with a colleague I found solution: to increase pagesize in your database to at least 8K. Actually, it is listed as requirement here:
but there is a slight chance you might omit that :) (I did...)
So, be sure that your database have been created with pagesize of 8K. If not, drop it and recreate it with a proper setting. The reason for it being necessary is a requirement for an index tablespace to be large enough to house an indexes for a colums of a specified size. Here it was 1024 VARCHAR + 128 bit for index, which gives over 1024, and hence requires 8K Pagesize. Details can be found here
Good luck and leave a comment if it solved your problem.