SQL Developer 'run script' failing but 'run statement' works - sql

Question

I have a simple left join query on two tables linking to get the description:
SELECT WORK.ACTION_ID, WORK.ACTION_STAT, WORK.DESCRIPTION_ID,
WORK.CLIENT_SERVER_IND, WORK.UPDATE_TSTAMP, WORK.UPDATE_USER_ID,
WORK.OTHER_ACTION_DATA, D.DESCRIPTION_ID, D.LANGUAGE, D.DESCRIPTION_TEXT,
D.UPDATE_TSTAMP DSCRP_UPD_TSTAMP
FROM xxxx.R_ACTION WORK
INNER JOIN xxxx.R_DESC_TEXT D ON WORK.DESCRIPTION_ID = D.DESCRIPTION_ID
WHERE D.LANGUAGE = 'ENGLISH'
AND D.DESCRIPTION_STAT = 'P';
I have the query in SQL Developer and if I select 'Run Statement' it works fine in less than a second and I can retrieve all 283 records.
If I select 'Run Script' I can see the output for about 33 lines and it then just hangs and eventually I get a 'socket read timed out' message.
I have the same table in a different schema, but with slight different data in it, and in that one the run statement and run script work fine.
Why would it work for 'Run Statement' but fail for 'Run Script' in this schema?

Answer 1

I'm on the CLOB bandwagon, too. Thinking 90% chance your DESCRIPTION_TEXT is a CLOB field.
As a test, try this query as "run script", which ignores the actual DESCRIPTION_TEXT and outputs "bogus" instead:
SELECT WORK.ACTION_ID, WORK.ACTION_STAT, WORK.DESCRIPTION_ID,
WORK.CLIENT_SERVER_IND, WORK.UPDATE_TSTAMP, WORK.UPDATE_USER_ID,
WORK.OTHER_ACTION_DATA, D.DESCRIPTION_ID, D.LANGUAGE, 'bogus' DESCRIPTION_TEXT,
D.UPDATE_TSTAMP DSCRP_UPD_TSTAMP
FROM xxxx.R_ACTION WORK
INNER JOIN xxxx.R_DESC_TEXT D ON WORK.DESCRIPTION_ID = D.DESCRIPTION_ID
WHERE D.LANGUAGE = 'ENGLISH'
AND D.DESCRIPTION_STAT = 'P';
If that works, try using this query, which makes use of DBMS_LOB.SUBSTR() to help cast the CLOB as VARCHAR by truncating output to first 4000 characters of it.
SELECT WORK.ACTION_ID, WORK.ACTION_STAT, WORK.DESCRIPTION_ID,
WORK.CLIENT_SERVER_IND, WORK.UPDATE_TSTAMP, WORK.UPDATE_USER_ID,
WORK.OTHER_ACTION_DATA, D.DESCRIPTION_ID, D.LANGUAGE,
dbms_lob.substr(D.DESCRIPTION_TEXT, 4000) DESCRIPTION_TEXT,
D.UPDATE_TSTAMP DSCRP_UPD_TSTAMP
FROM xxxx.R_ACTION WORK
INNER JOIN xxxx.R_DESC_TEXT D ON WORK.DESCRIPTION_ID = D.DESCRIPTION_ID
WHERE D.LANGUAGE = 'ENGLISH'
AND D.DESCRIPTION_STAT = 'P';