actually it is completely impossible to work with server with scjview over ssh tunnel. such issues were in the previous versions when reading the system catalog takes up to 10 min but in 17th it reached a apogee. the system catalog is read quite fast but each 4-6 sec scjview is frozen for 10-20sec, no any reaction on keyboard or mouse click but all events are in the stack and when scjview is dissolved all of them are processed.
datastuido (another java based database management utility) run in parallel works without problems.
Linux 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
java version "1.8.0_31" Java(TM) SE Runtime Environment (build 8.1.004) SAP Java Server VM (build 8.1.004 25.31-b07, Mar 25 2015 16:38:59 - 81_REL - optU - linux amd64 - 6 - bas2:237682 (mixed mode))
SQL central 188.8.131.522
asked 26 Oct '15, 04:51