pgsql: Rethink SQLSTATE code for ERRCODE_IDLE_SESSION_TIMEOUT.

Rethink SQLSTATE code for ERRCODE_IDLE_SESSION_TIMEOUT.

Move it to class 57 (Operator Intervention), which seems like a
better choice given that from the client's standpoint it behaves
a heck of a lot like, e.g., ERRCODE_ADMIN_SHUTDOWN.

In a green field I'd put ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT
here as well.  But that's been around for a few years, so it's
probably too late to change its SQLSTATE code.

Discussion: https://postgr.es/m/763A0689-F189-459E-946F-F0EC4458980B@hotmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4edf96846a02693e4416478b3302e5133d2e8e01

Modified Files
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src/backend/utils/errcodes.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)