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

Re: contexts: getting DDL

Nigel Thomas


>> How to get DDL for contexts?

I was just playing with these...

As user LOG4PLSQL:

select * from all_context
NAMESPACE               SCHEMA                 PACKAGE                
------------------------------ ------------------------------ ------------------------------
MY_CONTEXT              LOG4PLSQL               MY_CONTEXT_PKG          
1 rows selected

select owner, object_name, object_type from all_objects where object_name like 'MY_CONTEXT'
OWNER                 OBJECT_NAME             OBJECT_TYPE      
------------------------------ ------------------------------ -------------------
SYS                   MY_CONTEXT              CONTEXT        
1 rows selected

Note that the ALL_CONTEXT view doesn't list contexts until they are activated (when a session calls the specified package to set an attribute in a namespace). Meanwhile note also that the context object is owned by SYS even though it was created (in my case) by LOG4PLSQL.

The best source of information is the DBA_CONTEXT view

select * from dba_context

NAMESPACE               SCHEMA                 PACKAGE                TYPE            
------------------------------ ------------------------------ ------------------------------ ----------------------
REGISTRY$CTX             SYS                   DBMS_REGISTRY_SYS         ACCESSED LOCALLY    
DR$APPCTX               CTXSYS                 DRIXMD                 ACCESSED LOCALLY    
MY_CONTEXT              LOG4PLSQL               MY_CONTEXT_PKG           ACCESSED LOCALLY    
3 rows selected

You should be able to reconstruct your contexts by querying this view and presumably skipping the first two:

select 'create or replace context '||namespace||
    ' using '||schema||'.'||package||
    ' '||type||';' sqlcmd
from dba_context
where schema not in ('SYS','CTXSYS')

Regards Nigel