Query on "bigtable" from remote Client hangs (certain queries or fields)
Last updated on JUNE 04, 2018
Applies to:Oracle Net Services - Version 18.104.22.168 and later
Information in this document applies to any platform.
Certain queries are hanging when run from some remote Clients.
However, other (smaller) queries are successful.
This is especially evident on queries that require more than 2kb of data to be returned.
select * from v$database; --> hangs
select count(*) from v$database; --> works
DESCRIBE with large data results --> hangs
DESCRIBE with small data results --> works
This might also show up with Database Links (DBLINK) as well.
Matching Client and Server (level 16) tracing on each side shows the following at the time of the "hang"
--> Server waits on the Client for "MOREDATA" (but the Client is waiting on the information requested by the last query).
Hence the hanging.
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