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TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Re: nowait cursors in triggers

Connor McDonald

2005-06-09

Replies:
Oh dear... How obvious ...what a goose I am

Chalk up another pebkac problem for me...

(pebkac =3D "problem exists between keyboard and chair")

Cheers
Connor

On 6/9/05, Khemmanivanh, Somckit <somckit.khemmanivanh@(protected)=
ote:
>=20
> Hey,
>=20
> I'm no trigger expert and may be way off, but...
>=20
> Just trying to work out the event flow here...
>=20
> Session 1 deletes where x =3D 1 (this sets the lock on this row), then th=
e
> trigger fires and locks the remaining rows
>=20
> Session 2 tries to delete where x =3D 2, but Sess 1's trigger would have
> acquired a lock on this row, thus session 2 waits.
>=20
> To me the trigger for session 2 would not have fired yet since it's
> being blocked on the delete process. The trigger is an AFTER delete
> trigger but the delete never gets a chance to complete due to the lock
> acquired by the first trigger.
>=20
> Sess 2's select ... for update nowait statement never gets a chance to
> execute...By the way is there a way to check if a trigger has fired?
>=20
> Feel free to correct me if I'm way off.
>=20


--=20
Connor McDonald
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
email: connor_mcdonald@(protected)
web:  http://www.oracledba.co.uk

"Semper in excremento, sole profundum qui variat"
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