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how to connect to a remote oracle database using php

Posted on 2001-08-19
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Last Modified: 2010-08-05
How do i connect to a remote oracle using php? I'm running php 4.0.6/apache on red hat linux. What do i need to install in order to access the remote oracle database?
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Question by:juan_tanga
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gizmola earned 50 total points
ID: 6405010
You need to install the Oracle client libraries. There is no seperate client CD, you need the Oracle for Linux CD or installation software in order to do the client install. Then use the oracle functions described here to connect:

http://www.php.net/manual/en/ref.oracle.php

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Author Comment

by:juan_tanga
ID: 6405022
Can i download the Oracle client libraries on their website?
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Author Comment

by:juan_tanga
ID: 6405045
Can i download the Oracle client libraries on their website?
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Expert Comment

by:TRXR
ID: 6405541
i think you just have to include the php_oci8.dll and/or the php_oracle.dll in the php.ini depending on the interface you want to use (you can use two sets of functions to access the db: ora_xxx and oci_xxx). the dlls are in your php/extensions directory. you also have to fill in the correct extensions path at extension_dir = "", so the php.exe may find these dlls.
this version of php does support oracle, you just have to switch it on.

good luck.
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Expert Comment

by:TRXR
ID: 6405660
sorry
just recognized u r using linux
actualy it should be something simmilar

good luck again
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Expert Comment

by:gizmola
ID: 6406650
No you can't. Oracle doesn't provide the client libraries for download. You need to get a copy of Oracle for Linux.  one of the trial versions that they have available for download may do the job.
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Author Comment

by:juan_tanga
ID: 6416123
i downloaded the oracle8i enterprise for linux. Is it compatible to Oracle 8 (not i) enterprise edition? co'z thats our serving running on windows nt
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Expert Comment

by:gizmola
ID: 6416479
Yes the client libraries should be backwards compatible.
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Expert Comment

by:kalosi
ID: 6421209
You have to install a oracle client. Versions 8.1.6 or 8.1.7 for linux will fit your needs. As you wrote that you use linux I assume that you use apache/php combonation. To get the whole thin working you will have to export the oracle variables
Simply put theese line to your /etc/profile


ORACLE_BASE=/opt/oracle
ORACLE_HOME=/opt/oracle/OraHome1
ORA_NLS33=/opt/oracle/OraHome1/ocommon/nls/admin/data
ORACLE_OWNER=oracle
NLS_LANG=AMERICAN_AMERICA.EE8ISO8859P2
TNS_ADMIN=/opt/oracle/OraHome1/network/admin

of course replace the paths to fit your installation. don't forget to export the variables. The next thing is you have to
set up your tnsnames.ora and sqlnet.ora located in TNS_ADMIN directory

here is a sample sqlnet.ora file

names.default_domain = WORLD
name.default_zone = WORLD
names.directory_path = (TNSNAMES, HOSTNAME)

and here is a sample tnsnames.ora entry

ORACLE_SID.WORLD =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (COMMUNITY = tcp.world)(PROTOCOL = TCP)(Host = 12.2.33.12)(Port = 1521))
      (ADDRESS = (COMMUNITY = tcp.world)(PROTOCOL = TCP)(Host = 12.2.33.12)(Port = 1526))
    )
    (CONNECT_DATA = (SID = ORACLE_SID)(SERVER=DEDICATED))
   )



to test it try first the tnsping utility tnsping oracle_sid if it returns OK try sqlplus username/password@oracle_sid to log on to database. if you succeed yout oracle instalation works correctly.

And one common pitfall: you might get some trouble when starting the apache instance with apachectl script it does not read the enviroment variables. try to start it with the original httpd script. Another solution is to put the variables from /etc/profile to the starting script and also to the apache owners .bash_profile.

To make sure that everything is in place try to write a sample php script

<?

echo getenv("ORACLE_HOME");
echo getenv("TNS_ADMIN");
echo getenv("NLS_LANG");

?>


that's all hope it helps
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Author Comment

by:juan_tanga
ID: 6427601
thanks but I guess i don't need it anymore co'z i already connected using the username@host format in ora_logon()command in php.
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