TMF Operations and Recovery Guide (G06.26+)

Routine Maintenance

HP NonStop TMF Operations and Recovery Guide—522417-003

2-19

Verifying that New Transactions Can Start

If there is a problem with transactions starting, you usually discover it by monitoring the

EMS log or the STATUS TMF display: that display provides a global view of TMF.

You can also use the STATUS BEGINTRANS command to make sure that transactions

are able to start on the system; this command displays the status of the

BEGINTRANSACTION object. Under normal operation, BEGINTRANSACTION is

enabled and new transactions are allowed to start. There are several reasons that

cause BEGINTRANSACTION to become disabled, however; under this condition, new

transactions are not allowed to start.

Any user allowed to use TMFCOM can issue this command while TMF is running.

Normally, the STATUS BEGINTRANS command displays the message:

BeginTrans Status: ENABLED

If transaction starts are disabled, you will see the message:

BeginTrans Status: DISABLED

The command also displays the reason why new transactions are disabled.

Reason: Audit Trail is above the BEGINTRANSDISABLE

threshold.

Meaning. The active-audit volume has filled to the level that causes TMF to disallow

new transactions. When the used capacity falls below this level, new transactions are

allowed to start.

Action. See Why Audit-Trail Files Stay Pinned on a Volume on page 2-5 and

Responding to Audit-Trail Overflow on page 3-5 for information on correcting the begin-

transaction-disable condition.

Committed The transaction has completed, and locks held by the transaction are

being released. The transaction stays in this state until all nodes

affected by the transaction have been informed of the committed

changes.

Hung The transaction is aborting, but the backout process has failed to undo

the transaction. See Controlling Individual Transactions

on page 3-21

for information on handling a hung transaction.

Prepared The child node is waiting for the parent node to send the result of the

transaction: that is, whether the transaction was committed or backed

out.

Table 2-4. Transaction States

State Meaning