All Oracle Error Codes
Oracle DBA Forum

Frequent Oracle Errors

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

TX locks

Adams, Matthew (GE Consumer & Industrial)


I'm having a WHOLE lot of fun trying to track down
the source of some ORA-2049 (timeout: distributed
transaction waiting for lock) in a purchased app=20
called Matrix. I have a number of questions I'm hoping=20
someone can answer.

Now, according to Metalink, this occurs when a session is=20
waiting on a TX enqueue that another session is holding AND
the waiting session is performing a distributed operation
via a DB link.

Also, according to Metalink (in a different document), TX
enqueues are taken on particular slots in particular rollback

If a new connection does, as it's first statment, a read across
a DB link, is a TX enqueue aquired immediately on a local rollback=20
segment (as I think it is?)

Why would two transactions need the same TX enqueue? Is it because
they are attempting to update the same row locally (which I have been=20
unable to prove or disprove yet)? Is it because they are=20
both going after the same rows remotely? Is it a lack of available =
in the rollback segments (ie, not enough rollback segments)?

None of these scenerios seem very likely in this case, but I'm=20
grasping at straws here.

Matt Adams - GE Appliances - matt.adams@(protected)
Just once, I wish we would encounter an
alien menace that wasn't immune to bullets.=20
      - The Brigadier
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