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Berkeley DB: DB_ENV->set_verbose
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DB_ENV->set_verbose
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#include <db.h>
int
DB_ENV->set_verbose(DB_ENV *dbenv, u_int32_t which, int onoff);
int
DB_ENV->get_verbose(DB_ENV *dbenv, u_int32_t which, int *onoffp);
Description: DB_ENV->set_verbose
The DB_ENV->set_verbose method turns specific additional informational
and debugging messages in the Berkeley DB message output on and off. To see
the additional messages, verbose messages must also be configured for
the application. For more information on verbose messages, see the
DB_ENV->set_msgfile method.
The database environment's messages may also be configured using the
environment's DB_CONFIG file. The syntax of the entry in that
file is a single line with the string "set_verbose", one or more whitespace
characters, and the method which parameter as a string; for example,
"set_verbose DB_VERB_RECOVERY".
Because the DB_CONFIG file is read when the database environment
is opened, it will silently overrule configuration done before that
time.
The DB_ENV->set_verbose method configures operations performed using the specified
DB_ENV handle, not all operations performed on the underlying
database environment.
The DB_ENV->set_verbose method may be called at any time during the life of the
application.
The DB_ENV->set_verbose method
returns a non-zero error value on failure
and 0 on success.
Parameters
onoff- If the onoff parameter is set to non-zero, the additional
messages are output.
which- The which parameter must be set to one of the following values:
DB_VERB_DEADLOCK- Display additional information when doing deadlock detection.
DB_VERB_FILEOPS- Display additional information when performing filesystem operations
such as open, close or rename. May not be available on all platforms.
DB_VERB_FILEOPS_ALL- Display additional information when performing all filesystem operations,
including read and write. May not be available on all platforms.
DB_VERB_RECOVERY- Display additional information when performing recovery.
DB_VERB_REGISTER
DB_VERB_REPLICATION- Display all detailed information about replication. This includes the
information displayed by all of the other DB_VERB_REP_* and DB_VERB_REPMGR_*
values.
DB_VERB_REP_ELECT- Display detailed information about replication elections.
DB_VERB_REP_LEASE- Display detailed information about replication master leases.
DB_VERB_REP_MISC- Display detailed information about general replication processing not
covered by the other DB_VERB_REP_* values.
DB_VERB_REP_MSGS- Display detailed information about replication message processing.
DB_VERB_REP_SYNC- Display detailed information about replication client synchronization.
DB_VERB_REPMGR_CONNFAIL- Display detailed information about Replication Manager connection failures.
DB_VERB_REPMGR_MISC- Display detailed information about general Replication Manager processing.
DB_VERB_WAITSFOR- Display the waits-for table when doing deadlock detection.
Errors
The DB_ENV->set_verbose method
may fail and return one of the following non-zero errors:
EINVAL- An
invalid flag value or parameter was specified.
Description: DB_ENV->get_verbose
The DB_ENV->get_verbose method returns whether the specified which
parameter is currently set or not.
The DB_ENV->get_verbose method may be called at any time during the life of the
application.
The DB_ENV->get_verbose method
returns a non-zero error value on failure
and 0 on success.
Parameters
which- The which parameter is the message value for which configuration
is being checked.
onoffp- The onoffp parameter references memory into which
the configuration of the specified which parameter is copied.
If the returned onoff value is zero, the parameter is off;
otherwise on.
Class
DB_ENV
See Also
Database Environments and Related Methods
Copyright (c) 1996,2008 Oracle. All rights reserved.