Differences

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--- v5:database:oracle [2016/03/01 01:36] – [oci8] mnewnham
+++ v5:database:oracle [2023/01/25 04:40] (current) – [Auto-Increment Column] mnewnham
@@ Line 13: / Line 13: @@
 ^ADOdb V6|Yes|
 == Alternatives ==
-**Alternative Drivers**\\
+[[v5:database:pdo#pdo_oci|PDO driver for Oracle]]
-[[v5:database:pdo#pdo_oci|PDO driver for Oracle]]\\
+== See Also ==
-[[v5:database:ado|ADO driver for Oracle]]
+[[v5:reference:connection:setconnectionparameter#oracle|setConnectionParameter()]]
 </WRAP>
@@ Line 31: / Line 31: @@
 | [[v5:database:oracle:bind|bind()]]                    | A fast way of updating records             |
 | [[v5:database:oracle:executecursor|executeCursor()]]  | Returns a cursor to procedure as a handle  |
-{{tag>[oracle unix windows active]}}
+{{tag>[oracle unix windows active tier1]}}
 ==== Connection Examples ====
@@ Line 72: / Line 72: @@
   $dsn = 'oci8://user:pwd@tnsname/?persist';  # persist is optional
-  $conn = ADONewConnection($dsn);  # no need for Connect/PConnect
+  $conn = ADONewConnection($dsn);  # no need for connect/pConnect
   $dsn = 'oci8://user:pwd@host/sid';
@@ Line 89: / Line 89: @@
 The default value for ''NLS_DATE_FORMAT'' is ''YYYY-MM-DD''. To include time as well, use ''RRRR-MM-DD HH24:MI:SS'' or set the value to empty to disable this action.
+----------------------------------
+==== Auto-Increment Column ====
+[[v5:dictionary:column_attributes#AUTO or AUTOINCREMENT|Auto-increment]] support for Oracle databases is implemented by creating an on-insert trigger that retrieves a sequence number from a sequence //**SEQ_ + table name **//. This is done by default.
+If you have long table names then the generated trigger name can exceed the maximum allowed length. To prevent this, use the class variable ''useCompactAutoIncrements''. This will change the trigger name to a generated CRC value of the name.
+=== Example using the table name "customer_delivery_address" ===
+By default, the trigger name would be SEQ_CUSTOMER_DELIVERY_ADDRESS which exceeds the 16 character name for sequences. By setting ''$db->useCompactAutoIncrements=true'', the sequence name is changed to ''SEQ_401703491''
+=== Accessing the trigger in your code ===
+<code php>
+$db->useCompactAutoIncrements=true;
+$tab = 'customer_delivery_address';
+$tab = sprintf('SEQ_%u',crc32(strtolower($tab)));
+print $tab; //prints SEQ_401703491
+</code>
+-----------------------------------
+==== Session Mode ====
+From ADOdb **V5.23.0**, You can use external ''(OCI_CRED_EXT)'' or privileged (''OCI_SYSOPER or OCI_SYSDBA'') sessions via the [[v5:reference:connection:setconnectionparameter|setConnectionParameter()]] method, **prior** to establishing a connection.
+<code php>
+$db = ADONewConnection('oci8');
+$db->setConnectionParameter('session_mode', OCI_CRED_EXT);
+$db->connect(false, 'scott', 'tiger', 'myTNS');
+</code>
+----------------------------------------------
 ====== oci8po ======
 <WRAP right box round 300px>
@@ Line 102: / Line 135: @@
 ^ADOdb V6|Yes|
 </WRAP>
-This driver extends the oci8 driver and provides compatibility with other database drivers such as MySQL and SQL Server. Use this version of the driver if you are writing portable code.
+This driver extends the oci8 driver and mostly provides compatibility with MySQL databases which use the ? placeholder for bind params.
+If you are migrating code or writing portable code, consider using the [[v5:reference:connection:param|param()]] command to write portable placeholders.
+A second difference to this driver is that it does not create a sequence to emulate auto-increment fields. You must provide the functionality yourself if you need it.
 {{tag>[oracle unix windows active portable]}}
 ------------------------------------
@@ Line 117: / Line 155: @@
 </WRAP>
 This driver provides an undocumented enhancement to the oci8 driver
+It adds a [[https://docs.oracle.com/cd/B12037_01/server.101/b10752/hintsref.htm#4942|FIRST_ROWS]] optimizer hint to the SQL statements executed with [[v5:reference:connection:selectlimit]].
+Note that //FIRST_ROWS// has been deprecated in Oracle 9.2, and is retained for backwards compatibility.
 {{tag>[oracle unix windows deprecated]}}
@@ Line 124: / Line 166: @@
 <WRAP right box round 300px>
 == Specification ==
-^Driver Name|oci805cus|
+^Driver Name|oci8quercus|
 ^Data Provider|oracle|
 ^Status|Inactive((This driver is obsolete is not actively supported or enhanced by ADOdb project members, but you can provide fixes and enhancements if you have the expertise))|
@@ Line 132: / Line 174: @@
 ^ADOdb V6|Yes|
 </WRAP>
-This driver provides an undocumented enhancement to the oci8 driver
+This driver provides an undocumented enhancement to the oci8 driver. The differences in the driver relate solely to the use of cursors in stored procedures. This may be related to information in the function [[v5:database:oracle:executecursor|executeCursor]]  and the [[v5:userguide:oracle_tutorial|Oracle Tutorial]]. If you have the appropriate expertise and the time to investigate and explain these drivers, let us know.
 {{tag>[oracle unix windows deprecated]}}