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RTC Eclipse client Check-in and Deliver results in CRJAZ0212I Internal error

Accepted answer

Besides Check-in and Deliver, do you get CRJAZ0212I Internal error when creating repository workspace as well?
Please check db2diag.log.
db2diag.log might show that "A useable temporary tablespace of pagesize 16384 was not found".
If that's the case, just create a useable temporary tablespace of pagesize 16384 in DB2.