(PHP 7 >= 7.2.14, PHP 7.3.1 > 7.3 PECL OCI8 >= 2.2.0)
oci_set_db_operation — Sets the database operation
$connection
, string $dbop
) : boolSets the DBOP for Oracle tracing.
The database operation name is registered with the database when the next 'round-trip' from PHP to the database occurs, typically when a SQL statement is executed.
The database operation can subsequently be queried from database administration views such as V$SQL_MONITOR.
The oci_set_db_operation() function is available when OCI8 uses Oracle 12 (or later) Client libraries and Oracle Database 12 (or later).
connectionOracle 连接标识，由 oci_connect()，oci_pconnect()，或 oci_new_connect() 返回。
dbopUser chosen string.
成功时返回 TRUE， 或者在失败时返回 FALSE。
Example #1 Setting the DBOP
<?php
$c = oci_connect('hr', 'welcome', 'localhost/XE');
// Record the operation
oci_set_db_operation($c, 'main query');
// Code that causes a round-trip, for example a query:
$s = oci_parse($c, 'select * from dual');
oci_execute($s);
oci_fetch_all($s, $res);
sleep(30);
?>
// While the script is running, the administrator can see the database operations // being performed: sqlplus system/welcome SQL> select dbop_name from v$sql_monitor;
一些 OCI8 函数会导致 Roundtrips. 对数据库来说当启用结果缓存时，查询可能不产生Roundtrips。