Forum OpenACS Q&A: nsoracle error?

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1: nsoracle error?
Posted by Abrantes Filho on 08/05/12 03:30 PM
Well, I d'ont know if this is the correct forum to post, but I could not find exactly where I should post my question.

I'm installing an AOLserver 4.5.1 for a OpenACS site in our development server, and I'm having a little trouble with nsoracle.

Tech information about the web server environment:
- openSUSE 11.2, 32 bits
- AOLserver 4.5.1
- nsoracle 2.7
- Oracle Client 11.2.0.3.0

Everything was installed according instructions and I could connect AOLserver with our database server without any problems.

Please, visit the following URLs:

- AOLserver 4.5.1 installation:
http://desenv.saudenaweb.com.br:84/

- AOLserver connection test page with our database server (just a "select sysdate from dual" from Oracle):
http://desenv.saudenaweb.com.br:84/db.adp

Until now I could install AOLserver 4.5.1 and connect it to our database server.

But, when I try to test the nsoracle installation with the tests scripts provided by nsoracle, I got an error with the "clob-test.tcl" test. All other tests were done whit success. Please, visit the following URLs:

- table-test.tcl: OK
http://desenv.saudenaweb.com.br:84/nsoracle/table-test.tcl

- bind-test.tcl: OK
http://desenv.saudenaweb.com.br:84/nsoracle/bind-test.tcl

- error-test.tcl: OK
http://desenv.saudenaweb.com.br:84/nsoracle/error-test.tcl

- clob-test.tcl: ERROR!!
http://desenv.saudenaweb.com.br:84/nsoracle/clob-test.tcl

This last test, "clob-test.tcl", starts to run but exit with an error just after the first *lob_*_file tests.

AOLserver log show this:
[05/Aug/2012:10:22:48][32340.3025718128][-default:0-] Error: Tcl exception:

while executing
"ns_ora clob_get_file $db "select chunks from markd_lob_test where lob_id=100" ${empty_file_name}-back"
(file "/srv/www/aolserver/server1/www/nsoracle/clob-test.tcl" line 454)
invoked from within
"source $file"
invoked from within
"ns_sourceproc cns53 {}"

The docs for nsoracle (http://desenv.saudenaweb.com.br:84/nsoracle/doc/) clearly indicates that the "ns_ora clob_get_file" is part of the extended api.

I did not installed the openACS because of this failed test with nsoracle.

So, any ideas on how can I correct this lob problema with nsoracle?

Thanks!

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2: Re: nsoracle error? (response to 1)
Posted by Dave Bauer on 08/06/12 02:46 PM
Hi, can you provide some more surrounding context from the error log, especially before the part you posted? There is not enough information to help.
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3: Re: nsoracle error? (response to 2)
Posted by Abrantes Filho on 08/06/12 03:31 PM
Hi, thanks for you help.

I restarted the AOLserver and tryed to acess the clob-test.tcl page again. All logs from AOLserver, since the restart, are here:

[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: nsmain: AOLserver/4.5.1 starting
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: nsmain: security info: uid=30, euid=30, gid=8, egid=8
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: nsmain: max files: FD_SETSIZE = 1024, rl_cur = 8192, rl_max = 8192
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Warning: nsmain: rl_max > FD_SETSIZE
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: encoding: loaded: utf-8
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: fastpath[server1]: mapped GET /
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: fastpath[server1]: mapped HEAD /
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: fastpath[server1]: mapped POST /
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: adp[server1]: mapped GET /*.adp
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: adp[server1]: mapped HEAD /*.adp
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: adp[server1]: mapped POST /*.adp
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nssock.so'
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nslog.so'
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: nslog: opened '/usr/local/aolserver/servers/server1/modules/nslog/access.log'
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nsdb.so'
[06/Aug/2012:10:24:48][25854.3074164416][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nsoracle.so'
[06/Aug/2012:10:24:49][25854.3074164416][-main-] Notice: ora11 driver LobBufferSize = 32768
[06/Aug/2012:10:24:49][25854.3074164416][-main-] Notice: ora11 driver PrefetchRows = 0
[06/Aug/2012:10:24:49][25854.3074164416][-main-] Notice: ora11 driver PrefetchMemory = 0
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: Loaded ArsDigita Oracle Driver version 2.7, built on 15:01:46/Aug 2 2012
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nscache.so'
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: nscache module version 1.5 server: server1
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: conf: [ns/server/server1]enabletclpages = 1
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: tcl: enabling .tcl pages
[06/Aug/2012:10:24:50][25854.3074164416][-main-] Notice: default thread pool: minthreads 5 maxthreads 20 idle 0 current 0 maxconns 100 queued 0 timeout 120 spread 20
[06/Aug/2012:10:24:51][25854.3074164416][-main-] Notice: XOTcl version 1.6.6 loaded
[06/Aug/2012:10:24:51][25854.3074164416][-main-] Notice: nsmain: AOLserver/4.5.1 running
[06/Aug/2012:10:24:51][25854.3074164416][-main-] Notice: nsmain: security info: uid=30, euid=30, gid=8, egid=8
[06/Aug/2012:10:24:51][25854.3065711472][-sched-] Notice: sched: starting
[06/Aug/2012:10:24:51][25854.3074164416][-main-] Notice: driver: starting: nssock
[06/Aug/2012:10:24:51][25854.3025562480][-default:0-] Notice: random: generating 1 seed
[06/Aug/2012:10:24:51][25854.3024538480][-nssock:driver-] Notice: starting
[06/Aug/2012:10:24:51][25854.3024538480][-nssock:driver-] Notice: nssock: listening on 200.179.110.80:84
[06/Aug/2012:10:25:06][25854.3025562480][-default:0-] Notice: dbdrv: opening database 'ora11:snw'
[06/Aug/2012:10:25:09][25854.3025562480][-default:0-] Error: Tcl exception:
while executing
"ns_ora clob_get_file $db "select chunks from markd_lob_test where lob_id=100" ${empty_file_name}-back"
(file "/srv/www/aolserver/server1/www/nsoracle/clob-test.tcl" line 492)
invoked from within
"source $file"
invoked from within
"ns_sourceproc cns0 {}"

Above are all logs genereted since the AOLserver restart and a try to run clob-test.tcl again.

The only error message in the log are about "ns_ora clob_get_file".

I'm doing something wrong?

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4: Re: nsoracle error? (response to 1)
Posted by Abrantes Filho on 08/09/12 12:56 PM
Could I just ignore this lob problema and just continue on OpenACS installation?

Or should I resolve this issue first?

Thanks!

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5: Re: nsoracle error? (response to 1)
Posted by Dave Bauer on 08/09/12 01:43 PM
Is there any more information about the actual error in the logs? It says Tcl Exception, but that doesn't explain what the actual problem was.
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6: Re: nsoracle error? (response to 5)
Posted by Abrantes Filho on 08/09/12 03:20 PM
No, the log just show exactly that message.

I restarted AOLserver whit the parameter "set debug true" and just access the clob-test.tcl again. Here are the logs with debug parameter set to true:

[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: nsmain: AOLserver/4.5.1 starting
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: nsmain: security info: uid=30, euid=30, gid=8, egid=8
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: nsmain: max files: FD_SETSIZE = 1024, rl_cur = 8192, rl_max = 8192
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Warning: nsmain: rl_max > FD_SETSIZE
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: encoding: loaded: utf-8
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: fastpath[server1]: mapped GET /
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: fastpath[server1]: mapped HEAD /
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: fastpath[server1]: mapped POST /
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: adp[server1]: mapped GET /*.adp
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: adp[server1]: mapped HEAD /*.adp
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: adp[server1]: mapped POST /*.adp
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nssock.so'
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nslog.so'
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: nslog: opened '/usr/local/aolserver/servers/server1/modules/nslog/access.log'
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nsdb.so'
[09/Aug/2012:10:12:26][14557.3074852544][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nsoracle.so'
[09/Aug/2012:10:12:28][14557.3074852544][-main-] Notice: ora11 driver LobBufferSize = 32768
[09/Aug/2012:10:12:28][14557.3074852544][-main-] Notice: ora11 driver PrefetchRows = 0
[09/Aug/2012:10:12:28][14557.3074852544][-main-] Notice: ora11 driver PrefetchMemory = 0
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: Loaded ArsDigita Oracle Driver version 2.7, built on 15:01:46/Aug 2 2012
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: modload: loading '/usr/local/aolserver/bin/nscache.so'
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: nscache module version 1.5 server: server1
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: conf: [ns/server/server1]enabletclpages = 1
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: tcl: enabling .tcl pages
[09/Aug/2012:10:12:29][14557.3074852544][-main-] Notice: default thread pool: minthreads 5 maxthreads 20 idle 0 current 0 maxconns 100 queued 0 timeout 120 spread 20
[09/Aug/2012:10:12:30][14557.3074852544][-main-] Notice: XOTcl version 1.6.6 loaded
[09/Aug/2012:10:12:30][14557.3074852544][-main-] Notice: nsmain: AOLserver/4.5.1 running
[09/Aug/2012:10:12:30][14557.3074852544][-main-] Notice: nsmain: security info: uid=30, euid=30, gid=8, egid=8
[09/Aug/2012:10:12:30][14557.3066399600][-sched-] Notice: sched: starting
[09/Aug/2012:10:12:30][14557.3074852544][-main-] Notice: driver: starting: nssock
[09/Aug/2012:10:12:30][14557.3026250608][-default:0-] Notice: random: generating 1 seed
[09/Aug/2012:10:12:30][14557.3025226608][-nssock:driver-] Notice: starting
[09/Aug/2012:10:12:30][14557.3025226608][-nssock:driver-] Notice: nssock: listening on 200.179.110.80:84
[09/Aug/2012:10:13:09][14557.3026250608][-default:0-] Notice: dbdrv: opening database 'ora11:snw'
[09/Aug/2012:10:13:10][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'drop table markd_lob_test'
[09/Aug/2012:10:13:10][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'create table markd_lob_test (lob_id integer, chunks clob, blunks blob)'
[09/Aug/2012:10:13:10][14557.3026250608][-default:0-] Notice: SQL():
insert into markd_lob_test (lob_id, chunks)
values (0, empty_clob())
returning chunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 67: This is a small lob. There are many like it, but this one is mine.
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
insert into markd_lob_test (lob_id, chunks)
values (1, empty_clob())
returning chunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 0: (NULL)
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 1'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
insert into markd_lob_test (lob_id, blunks)
values (2, empty_blob())
returning blunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 67: This is a small lob. There are many like it, but this one is mine.
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 2'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
insert into markd_lob_test (lob_id, blunks)
values (3, empty_blob())
returning blunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 0: (NULL)
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 3'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set chunks = empty_clob()
where lob_id = 0
returning chunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 139: This is a small lob. There are many like it, but this one is mine. This is a small lob. There are many like it, but this one is mine.
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set chunks = empty_clob()
where lob_id = 0
returning chunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 1: a
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set chunks = empty_clob()
where lob_id = 0
returning chunks into :1
[09/Aug/2012:10:13:11][14557.3026250608][-default:0-] Notice: CLOB # 0, length 0: (NULL)
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): '
update markd_lob_test set chunks = empty_clob()
where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select chunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set blunks = empty_blob()
where lob_id = 0
returning blunks into :1
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: CLOB # 0, length 139: This is a small lob. There are many like it, but this one is mine. This is a small lob. There are many like it, but this one is mine.
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set blunks = empty_blob()
where lob_id = 0
returning blunks into :1
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: CLOB # 0, length 1: a
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: SQL():
update markd_lob_test set blunks = empty_blob()
where lob_id = 0
returning blunks into :1
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: CLOB # 0, length 0: (NULL)
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): '
update markd_lob_test set blunks = empty_blob()
where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: dbinit: sql(snw): 'select blunks from markd_lob_test where lob_id = 0'
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: SQL():
insert into markd_lob_test (lob_id, chunks)
values (100, empty_clob())
returning chunks into :1
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: CLOB # 0, file name /tmp/markd-empty.txt
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Notice: SQL(): select chunks from markd_lob_test where lob_id=100
[09/Aug/2012:10:13:12][14557.3026250608][-default:0-] Error: Tcl exception:

while executing
"ns_ora clob_get_file $db "select chunks from markd_lob_test where lob_id=100" ${empty_file_name}-back"
(file "/srv/www/aolserver/server1/www/nsoracle/clob-test.tcl" line 492)
invoked from within
"source $file"
invoked from within
"ns_sourceproc cns0 {}"

The log ends here.

As you can see, even with debug set to true, the Tcl exception message is very little informative.

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7: Re: nsoracle error? (response to 1)
Posted by Dave Bauer on 08/09/12 03:23 PM
Thanks for responding.

What version of AOLserver and Tcl and Oracle are you using.

How did you install them, compiled, or packaged?

I haven't used Oracle in a long time, but usually the error messages are more informative.

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8: Re: nsoracle error? (response to 7)
Posted by Abrantes Filho on 08/09/12 03:46 PM
Hi, thank you for your message.

On the webserver (openSUSE 11.2, 32 bits):
- AOLserver 4.5.1
- TCL 8.5.12
- Oracle Client 11.2.0.3.0 (32 bits)

On the oracle server (SuSE Linux Enterprise Server 11 SP2, 64 bits):
- Oracle Server 11.2.0.3.0

I install AOLserver, TCL and nsoracle acconding the install instructions on openACS website, execpt that I don't used the sources on Git repository: I have downloaded the source from sf.net (http://sourceforge.net/projects/aolserver/files/), and compiled on my server according the instructions on openACS site.

Everytinhg happens very successfuly, except when I try to run the tests files on nsoracle source. The clob test failed.

Please note that some TCL procs on these nsoracle source files was missing, so I search the documentation on openACS site and just edit the files to include the procs. For example: the test files use the ReturnHeaders proc. I search on openACS site (and sources files) and included this on the test files:

proc util_WriteWithExtraOutputHeaders {headers_so_far {first_part_of_page ""}} {
set set_headers_i 0
set set_headers_limit [ns_set size [ns_conn outputheaders]]
while {$set_headers_i < $set_headers_limit} {
append headers_so_far "[ns_set key [ns_conn outputheaders] $set_headers_i]: [ns_set value [ns_conn outputheaders] $set_headers_i]\n"
incr set_headers_i
}
append entire_string_to_write $headers_so_far "\n" $first_part_of_page
ns_write $entire_string_to_write
}

proc ReturnHeaders {{content_type text/html}} {
set all_the_headers "HTTP/1.0 200 OK
MIME-Version: 1.0
Content-Type: $content_type\n"
util_WriteWithExtraOutputHeaders $all_the_headers
}

When I include the missing procs, all test files could be run and all, but the clob-test.tcl, run whiout error.

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9: Re: nsoracle error? (response to 8)
Posted by Gustaf Neumann on 08/11/12 10:23 AM
i have no oracle, but it seems as if the nsoracle driver has a problem returning the values saved from an empty_clob to a file. If you connect to the database, and check the content of the table "markd_lob_test", does it look correct?

The test you are running is from nsoracle and not from OpenACS. It might be possible, that writing empty_lobs to files and vice versa is not needed from OpenACS. Do you intend to use OpenACS? Note that OpenACS has quite a large regression test.

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10: Re: nsoracle error? (response to 1)
Posted by Abrantes Filho on 08/16/12 03:29 PM
Well, I'm still working on this and I think I'm getting close to a solution. Now I could run all the "clob-test.tcl" page until its end, with only some problems.

I did this:

First, I got the newer sources of nsoracle from git (git://github.com/aolserver/nsoracle.gi) and compiled whit the instructions on openACS site.

Next, I have installed this newer nsoracle into my AOLserver install.

Then, I did all of tests again:

http://desenv.saudenaweb.com.br:84/nsoracle/table-test.tcl

http://desenv.saudenaweb.com.br:84/nsoracle/bind-test.tcl

http://desenv.saudenaweb.com.br:84/nsoracle/error-test.tcl

http://desenv.saudenaweb.com.br:84/nsoracle/clob-test.tcl

As before, the table-test, the bind-test and the error-test just finished without error.

But this time, the clob-test could be run, with just some errors (the clob-test with nsoracle 2.7 never gets to the end of test, but with the newer sources from git, the test could be run).

Now I need to figure out the erros (in red font) on the clob-test below:
http://desenv.saudenaweb.com.br:84/nsoracle/clob-test.tcl

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11: Re: nsoracle error? (response to 10)
Posted by Abrantes Filho on 08/16/12 06:15 PM
Just another information:

The "ns_ora clob_dml_file" correctly inserted a small file as clob in the test table.

The problem is with "ns_ora clob_get_file": when selecting the clob and writing it to a return file, the resulting file have a binary charset, and so a diff between the original file and the retrurned file fails (should be equal).

The ORIGINAL file inserted on database (ns_ora clob_dml_file):

cat markd-small.txt
this is a small test file

file -i markd-small.txt
markd-small.txt: text/plain; charset=us-ascii

The RETURNED file (ns_ora clob_get_file):

cat markd-small.txt-back
this is a small test file

file -i markd-small.txt-back
markd-small.txt-back: text/plain; charset=binary

Now, aparently the problem is in ns_ora clob_get_file: it is writing a "binary" file insted of a "character" file.

Any ideas?