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SQL Developer hangs when any query is executed

in SQL Developer (MOSC) 7 commentsAnswered ✓

SQLdeveloper Version 19.2.1.247

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.17.0.0.0

Oracle client oraclient19.dll


We had this database that we can connect to then when any query is run it hangs even a simple select sysdate from dual. However, when query is run on SQL*Plus connected to the same database it works fine. Any other tools also works fine.


SQL*Plus works fine


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