Oracle C++ Call Interface Programmer's Guide

Environment Class
Environment Class
The Environment class provides an OCCI environment to manage memory and
other resources for OCCI objects.
The application can have multiple OCCI environments. Each environment would
have its own heap and thread-safety mutexes and so forth.
To create an Environment object, use the syntax:
Environment()
enum Mode
{
DEFAULT = OCI_DEFAULT,
OBJECT = OCI_OBJECT,
SHARED = OCI_SHARED,
NO_USERCALLBACKS = OCI_NO_UCB,
THREADED_MUTEXED = OCI_THREADED,
THREADED_UNMUTEXED = OCI_THREADED | OCI_ENV_NO_MUTEX
};
Summary of Environment Methods
Table 8–9 Environment Methods
Method Summary
createConnection() on page 8-63 Create a connection to a database.
createConnectionPool() on Create a connection pool.
page 8-63
createEnvironment() on page 8-64 Create an environment and use the specified memory
management functions.
getCacheMaxSize() on page 8-66 Retrieve the Cache Max heap size.
getCacheOptSize() on page 8-66 Retrieve the Cache optimal heap size.
getCurrentHeapSize () on
page 8-66
8-62 Oracle C++ Call Interface Programmer’s Guide
Return the current amount of memory allocated to all
objects in the current environment.
getMap() on page 8-66() Return the Map for the current environment.
getOCIEnvironment() on
page 8-66
Return the OCI environment associated with the
current environment.