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

Oracle/PHP Issue

Byron Pearce



We're having a situation with Oracle and PHP that I am hoping someone may have encountered and can provide some guidance on.

We have an Oracle 8.1.6 database instance running on a RedHat 7.2 server. The goal is to make a connection to this instance from the web server, which is running Red Hat Enterprise Server 3.0 and using the Oracle client. It is using Apache 2.0.46 and PHP 4.3.2 (oracle, oci8, curl, and dom modules).

The problem is that an ORA-12154 is returned intermittently by the scripts. Sometimes it works; sometimes it doesn't. A simple PHP test script using the ora_logon and ora_logoff works fine, consistently and without fail.

However, if we add in some ora_parse, ora_open, ora_exec, and ora_close calls then we start getting the aforementioned errors. Again, not all the time, just some of the time. There is no pattern that we have been able to discern.

By their very nature, intermittent errors are very maddening. If there are any PHP wizards who might have encountered this "feature" and know the problem, fix, workaround, hack, etc. and would be willing to share them would earn much gratitude.

Seriously, I appreciate any and all help anyone can provide.

Byron Pearce                 mailto:pearceb@(protected)
Tenure Systems, Inc.           Dallas/Fort Worth, TX

"It's hard to be a ninja when you wear a beeper."

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