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Published Jul. 2, 2025

SQL Server Database May Lock When Publishing Content in a Staged Environment or Importing a LAR

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Liferay Support

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Liferay portal may appear to hang or be unresponsive when importing a LAR or publishing to staging. This occurs if the database used in your environment is a SQL Server with default transaction isolation settings and it occurs regardless of the size of the content.

Resolution

1. Set in portal-ext.properties:

jdbc.default.liferay.pool.provider=dbcp
jdbc.default.defaultTransactionIsolation=READ_COMMITTED

2. Run queries:

ALTER DATABASE lportal SET ALLOW_SNAPSHOT_ISOLATION ON;
ALTER DATABASE lportal SET READ_COMMITTED_SNAPSHOT ON;
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